Join Early Retirement Today
View Poll Results: How often do you change the oil?
Every 3,000 miles 8 21.62%
Every 5,000 miles 12 32.43%
Every 7,500 miles 4 10.81%
Every 10,000 miles 2 5.41%
Every 15,000 miles 6 16.22%
I don't use 100% synthetic oil 5 13.51%
Voters: 37. You may not vote on this poll

Reply
 
Thread Tools Search this Thread Display Modes
100% Synthetic oil - change frequency
Old 04-16-2007, 01:02 PM   #1
Thinks s/he gets paid by the post
 
Join Date: Mar 2006
Location: Houston
Posts: 2,155
100% Synthetic oil - change frequency

Only for people using 100% synthetic oil in their car engine.

I used to use Mobil-1 and change my oil every 10K. Now I use Mobil-1 Extended Performance and change it every 15K.

__________________

__________________
Sam is offline   Reply With Quote
Join the #1 Early Retirement and Financial Independence Forum Today - It's Totally Free!

Are you planning to be financially independent as early as possible so you can live life on your own terms? Discuss successful investing strategies, asset allocation models, tax strategies and other related topics in our online forum community. Our members range from young folks just starting their journey to financial independence, military retirees and even multimillionaires. No matter where you fit in you'll find that Early-Retirement.org is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with our members, see fewer ads, upload photographs, create a retirement blog, send private messages and so much, much more!

Re: 100% Synthetic oil - change frequency
Old 04-16-2007, 01:08 PM   #2
Thinks s/he gets paid by the post
 
Join Date: Jul 2003
Location: Pasadena CA
Posts: 2,695
Re: 100% Synthetic oil - change frequency

In wife's Mazda Miata use M-1, change the oil at 6K and the filter at 3K. Plan to keep the car a long time. The oil does not break down but it still gets dirty therefore the filter change. I interchange synthetic & semi-synthetic in the Ford Focus and change the oil at 5 or 6K. Need to change it for the warranty.
__________________

__________________
T.S. Eliot:
Old men ought to be explorers
yakers is offline   Reply With Quote
Re: 100% Synthetic oil - change frequency
Old 04-16-2007, 01:14 PM   #3
Give me a museum and I'll fill it. (Picasso)
Give me a forum ...
FinanceDude's Avatar
 
Join Date: Aug 2006
Posts: 12,484
Re: 100% Synthetic oil - change frequency

I'm still not sold on synthetic, maybe you guys can help me understand.........

I know a LOT of mechanics that go with regular oil. They tell me that while synthetic DOES not break down as quickly as regular oil, it still gets dirty, and dirty oil causes problems in engines............

Plus, the synthetic oil I see is about twice as expensive as regular, so the cost would be the same whether I do regular oil every 3000 or synthetic every 6000??

Or maybe I am confused............. :P
__________________
Consult with your own advisor or representative. My thoughts should not be construed as investment advice. Past performance is no guarantee of future results (love that one).......:)


This Thread is USELESS without pics.........:)
FinanceDude is offline   Reply With Quote
Re: 100% Synthetic oil - change frequency
Old 04-16-2007, 01:30 PM   #4
Thinks s/he gets paid by the post
saluki9's Avatar
 
Join Date: Feb 2005
Posts: 2,032
Re: 100% Synthetic oil - change frequency

FD - You are correct, the oil still does get dirty. I just swap oil filters halfway through the cycle.

In my daily driver I use mobil one and change every 7K, on my toy / track car I change much more frequently. Because I'm usually running it pretty hard I swap out the mobil one every 3-4K
__________________
saluki9 is offline   Reply With Quote
Re: 100% Synthetic oil - change frequency
Old 04-16-2007, 01:36 PM   #5
Give me a museum and I'll fill it. (Picasso)
Give me a forum ...
brewer12345's Avatar
 
Join Date: Mar 2003
Posts: 16,391
Re: 100% Synthetic oil - change frequency

Semi-synthetic and every 7000 to 7500 miles in both cars. In my daily driver, that means an oil change every 3 months. In the minivan, its about every 9 months.
__________________
"There are three kinds of men. The one that learns by reading. The few who learn by observation. The rest have to pee on the electric fence for themselves."



- Will Rogers
brewer12345 is offline   Reply With Quote
Re: 100% Synthetic oil - change frequency
Old 04-16-2007, 01:47 PM   #6
Give me a museum and I'll fill it. (Picasso)
Give me a forum ...
FinanceDude's Avatar
 
Join Date: Aug 2006
Posts: 12,484
Re: 100% Synthetic oil - change frequency

Quote:
Originally Posted by saluki9
FD - You are correct, the oil still does get dirty. I just swap oil filters halfway through the cycle.

In my daily driver I use mobil one and change every 7K, on my toy / track car I change much more frequently. Because I'm usually running it pretty hard I swap out the mobil one every 3-4K
How much does Mobil 1 cost per quart??

I guess I'm stubborn, I've run regular oil and changed it every 3000 miles, and have enver had an engine problem.

Or maybe I'm just stubborn...........

I remember my dad's famous words: "Change your oil, or change your engine"..............
__________________
Consult with your own advisor or representative. My thoughts should not be construed as investment advice. Past performance is no guarantee of future results (love that one).......:)


This Thread is USELESS without pics.........:)
FinanceDude is offline   Reply With Quote
Re: 100% Synthetic oil - change frequency
Old 04-16-2007, 01:57 PM   #7
Give me a museum and I'll fill it. (Picasso)
Give me a forum ...
 
Join Date: Jul 2005
Posts: 5,408
Re: 100% Synthetic oil - change frequency

my bmw gets 1 oil change every 15.000 miles. 8 quarts extended service synthetic
__________________
mathjak107 is offline   Reply With Quote
Re: 100% Synthetic oil - change frequency
Old 04-16-2007, 02:25 PM   #8
Give me a museum and I'll fill it. (Picasso)
Give me a forum ...
TromboneAl's Avatar
 
Join Date: Jun 2006
Posts: 11,196
Re: 100% Synthetic oil - change frequency

Without draining the oil, is the oil level low enough that you can swap the filter without losing a lot of oil?
__________________
Al
TromboneAl is offline   Reply With Quote
Re: 100% Synthetic oil - change frequency
Old 04-16-2007, 02:32 PM   #9
Give me a museum and I'll fill it. (Picasso)
Give me a forum ...
TromboneAl's Avatar
 
Join Date: Jun 2006
Posts: 11,196
Re: 100% Synthetic oil - change frequency

Here's a related question: I change the oil in my pickup every 6 months or so, because the oil gets old, even though it only gets driven about 1000 miles or less in that time. I wonder if I could avoid that by using a synthetic. IOW, does the synthetic age more slowly?

Related to that, I have about 18 quarts of Chevron 5W-30 that I got on sale. It will be about a year and a half before all of that gets into the car. Do you think it will have aged too much by then?
__________________
Al
TromboneAl is offline   Reply With Quote
Re: 100% Synthetic oil - change frequency
Old 04-16-2007, 03:14 PM   #10
Thinks s/he gets paid by the post
MasterBlaster's Avatar
 
Join Date: Jun 2005
Posts: 4,359
Re: 100% Synthetic oil - change frequency

Quote:
Originally Posted by TromboneAl
Here's a related question: I change the oil in my pickup every 6 months or so, because the oil gets old, even though it only gets driven about 1000 miles or less in that time. I wonder if I could avoid that by using a synthetic. IOW, does the synthetic age more slowly?

Related to that, I have about 18 quarts of Chevron 5W-30 that I got on sale. It will be about a year and a half before all of that gets into the car. Do you think it will have aged too much by then?
From the motorhead sites.... The consensous is that you should change the oil in your car every 12 months if it's a low milage vehicle. I do exactly that for 2 of my cars.

For oil kept in the can/bottle it should stay good for a decade or more before it degrades. It's only when it gets cooked in the motor that the chemical breakdown is significant.

To answer the original topic for those that prefer synthetic versus regular oil. None of the OEM manufacturers recommend that you extend the oil change frequency when using synthetic oil. While synthetic oil has some attractive properties in that thermal breakdown is much much less, it still has to act as a chemical solvent to mop up all of the sludge. The idea then is to keep oil in the car only if it is capable of disolving those unwanted byproducts. Therefore the change interval should not be extended. The only people who make the longer change interval claims are the oil marketers not the engine manufacturers. Think about that before you extend the change interval.

The other thing that synthetic oil is used for is to accomadate engines where the engine cannot be designed to cool properly (A new Corvette or a Viper come to mind). Because the cooling in these engines is insufficient, conventional oil would begin to cook and sludge up the engine. For this reason these engines specify that synthetic oil must be used. And that, in my mind, is not really a good thing.
__________________
MasterBlaster is offline   Reply With Quote
Re: 100% Synthetic oil - change frequency
Old 04-16-2007, 03:27 PM   #11
Thinks s/he gets paid by the post
 
Join Date: Mar 2006
Location: Houston
Posts: 2,155
Re: 100% Synthetic oil - change frequency

Quote:
Originally Posted by TromboneAl
Here's a related question: I change the oil in my pickup every 6 months or so, because the oil gets old, even though it only gets driven about 1000 miles or less in that time. I wonder if I could avoid that by using a synthetic. IOW, does the synthetic age more slowly?
Yes.
www.jdpower.com/articles/article.aspx?ID=208

Quote:
Originally Posted by TromboneAl
Without draining the oil, is the oil level low enough that you can swap the filter without losing a lot of oil?
Most oil filters are above the oil level, so you would only lose the oil in the filter itself.

Quote:
Originally Posted by yakers
In wife's Mazda Miata use M-1, change the oil at 6K and the filter at 3K.
I change the filter when I change the oil.

Quote:
Originally Posted by FinanceDude
Plus, the synthetic oil I see is about twice as expensive as regular, so the cost would be the same whether I do regular oil every 3000 or synthetic every 6000??
Material cost is not an issue for me. Time (and labor) is.
__________________
Sam is offline   Reply With Quote
Re: 100% Synthetic oil - change frequency
Old 04-16-2007, 03:31 PM   #12
Recycles dryer sheets
 
Join Date: Jun 2005
Posts: 301
Re: 100% Synthetic oil - change frequency

Bmw says mine is to be changed every 15,000 miles. If the factory says so, that's good enough for me - I'll take their advice over the 'expert' in the adjacent cubicle any day.

I think the (conventional oil) every-3k mile rule is overkill and a waste of resources, but that's just me.

- John
__________________
runchman is offline   Reply With Quote
Re: 100% Synthetic oil - change frequency
Old 04-16-2007, 03:41 PM   #13
Give me a museum and I'll fill it. (Picasso)
Give me a forum ...
 
Join Date: May 2005
Posts: 13,256
Re: 100% Synthetic oil - change frequency

My car has a program that calculates the life left over.... currently about 6,000 miles with 40% left to go... the first two changes were about 6,000 with 5% left..
__________________
Texas Proud is offline   Reply With Quote
Re: 100% Synthetic oil - change frequency
Old 04-16-2007, 03:47 PM   #14
Thinks s/he gets paid by the post
 
Join Date: Mar 2006
Location: Houston
Posts: 2,155
Re: 100% Synthetic oil - change frequency

Quote:
Originally Posted by Texas Proud
My car has a program that calculates the life left over.... currently about 6,000 miles with 40% left to go... the first two changes were about 6,000 with 5% left..
What car is it? What kind of oil did you use?
__________________
Sam is offline   Reply With Quote
Re: 100% Synthetic oil - change frequency
Old 04-16-2007, 03:49 PM   #15
Give me a museum and I'll fill it. (Picasso)
Give me a forum ...
TromboneAl's Avatar
 
Join Date: Jun 2006
Posts: 11,196
Re: 100% Synthetic oil - change frequency

Thanks, Masterblaster.

Quote:
3k mile rule is overkill
Absolutely. My Echo manual says 7.5K (or 5K if used in dusty hot places), and yet the dealer always tells you "3,000 miles."

Quote:
My car has a program that calculates the life left over....
Do you mean it measures something and displays info, or just that it has a formula for calculating when to make the next change?
__________________
Al
TromboneAl is offline   Reply With Quote
Re: 100% Synthetic oil - change frequency
Old 04-16-2007, 03:50 PM   #16
Thinks s/he gets paid by the post
 
Join Date: Dec 2004
Posts: 1,798
Re: 100% Synthetic oil - change frequency

My Pontiac had a program in it that supposedly calculated oil usage based on idle time acceleration, etc. than told you when to change the oil. Mine worked out to about every 5k miles. Of course I got rid of that car because it was always at the dealership for warranty work.
__________________
You don't want to work. You want to live like a king, but the big bad world don't owe you a thing. Get over it--The Eagles
lets-retire is offline   Reply With Quote
Re: 100% Synthetic oil - change frequency
Old 04-16-2007, 07:27 PM   #17
Thinks s/he gets paid by the post
 
Join Date: Nov 2005
Posts: 2,119
Re: 100% Synthetic oil - change frequency

Consumer reports did a big study on motor oils on NYC taxis.

Get this 7500 is FINE to change the oil!! The 3000 change is not in any maintenace manuel , none. Heck some autos have a 10k oil change time frame.

The 3000 oil change is a marketing tool.
__________________
newguy88 is offline   Reply With Quote
Re: 100% Synthetic oil - change frequency
Old 04-16-2007, 08:13 PM   #18
Moderator Emeritus
Khan's Avatar
 
Join Date: Aug 2006
Location: Pine Island, Florida
Posts: 6,868
Send a message via AIM to Khan
Re: 100% Synthetic oil - change frequency

I don't know what kind of oil they put in the car (probably regular).

Get it changed once a year, which is less than 1600 miles.
__________________
"Knowin' no one nowhere's gonna miss us when we're gone..."
Khan is offline   Reply With Quote
Re: 100% Synthetic oil - change frequency
Old 04-16-2007, 09:39 PM   #19
Give me a museum and I'll fill it. (Picasso)
Give me a forum ...
 
Join Date: May 2005
Posts: 13,256
Re: 100% Synthetic oil - change frequency

Quote:
Originally Posted by Sam
What car is it? What kind of oil did you use?
Acura TL... just some formula that keep track of how often you start the car, RPMs etc etc... don't know the whole program (heck, don't know if it is published)... but some people on the TL forum gets a message in 4 to 5K miles with lots of city driving... this is my weekend car and I usually drive more highway...

I use regular oil... what they put in at the dealership... tell you the truth, I have not asked...
__________________
Texas Proud is offline   Reply With Quote
Re: 100% Synthetic oil - change frequency
Old 04-16-2007, 09:46 PM   #20
Thinks s/he gets paid by the post
 
Join Date: Mar 2006
Location: Houston
Posts: 2,155
Re: 100% Synthetic oil - change frequency

That makes sense. Even with regular oil, 6000 miles is about right.
__________________

__________________
Sam is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
It is NOT about the OIL after all doushioukanaa FIRE and Money 20 05-19-2006 01:07 PM
Oil, Oil, Everywhere . . . marty Other topics 1 05-17-2006 03:05 PM
Oil Change (A Little Long) Wife Sent to me, she thought it was cute poboy Other topics 21 03-30-2006 08:15 PM
Katrina Targeting U.S. Oil Operations Craig Other topics 1 08-28-2005 11:57 PM
I need to get a new car! laurence Other topics 124 06-10-2005 09:35 PM

 

 
All times are GMT -6. The time now is 04:27 AM.
 
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.