"Dino oil to Synthetic oil"

[wolf]

Just noticed. Costco, appears to have stopped selling "Dino Oil". And now has their own Kirkland synthetic oil. (besides Mobile 1).

Question. Have 2 older cars. Honda 2001, Toyota 2002. Well maintained.
high mileage. Burns very, very, little oil between oil changes.

Will changing to Kirkland, synthetic oil, cause a problem?

Anyone, have "hands on experience" ?

I already know, the "experts" say NO problem, switching from "dino" oil to
synthetic. I've personally had not good results, way back, when synthetic oil
first came out. Again, anyone actually do the experiment today, 2020. Thanks.

[ERD50]

You don't trust the experts, but you'll trust some random anecdote?

What were your "not good" results? Why do you attribute it to a switch?

-ERD50

[aja8888]

All you ever wanted to know about oil, baby!

https://www.bobistheoilguy.com/

If you can't find it here, it's not available.

[OldShooter]

When I was racing, my engine builder told me to "run anything you can get for free." He dynoed my engines with standard oils and was completely unconcerned when I started running a synthetic that left less ash on the backs of my exhaust valves.

IIRC, too, the SAE standards for oils include a requirement to demonstrate compatibility. It's not directly mentioned, but here's a basic article: https://www.sae.org/news/2014/09/cha...eries-of-ow-16

[Sunset]

Quote:

Originally Posted by wolf Just noticed. Costco, appears to have stopped selling "Dino Oil". And now has their own Kirkland synthetic oil. (besides Mobile 1). Question. Have 2 older cars. Honda 2001, Toyota 2002. Well maintained. high mileage. Burns very, very, little oil between oil changes. Will changing to Kirkland, synthetic oil, cause a problem? Anyone, have "hands on experience" ? I already know, the "experts" say NO problem, switching from "dino" oil to synthetic. I've personally had not good results, way back, when synthetic oil first came out. Again, anyone actually do the experiment today, 2020. Thanks.

Here is the advice you want from A Random Guy On The Internet.

I switched to synth with our 1998 Toyota Camry, (which by the way this model has a rare historical issue of oil gunk but not our car).

I do my own oil changes on the camry.

No problems, other than the oil does not blacken up as fast, so it's a little harder to see the oil level on the stick.

My other Toyota is 2015 and it only gets synth.

[Chuckanut]

Quote:

Originally Posted by aja8888 All you ever wanted to know about oil, baby! https://www.bobistheoilguy.com/ If you can't find it here, it's not available.

Thanks. I was wondering about the 0W-16 oil my Rav 4 uses. The dealer's tech told me I can use 0W-20 in an emergency, but to change back to 0W-16 in 5000 miles or at the next oil change, whichever comes first.

I guess that is the new normal for many new engines. Apparently, they did something to the engine internals to make this oil and its addiitives work well with my car.

[bigcmagor]

Can't speak to the specific question on converting an older car, however, I've always converted my cars to Mobil 1 for their first oil change and none of them have become oil users. We have two roadsters that are 15 and 17 years old that don't burn a drop. The only exception was a BMW X5 that we utilized the dealer's "free" oil changes for 36 months and the computer determined interval ended up being 13,000 - 14,000 miles. That one was burning oil at 50,000 miles when I took over the oil change responsibility.

[cbo111]

I've put Mobil 1 (0W-20) in a 2010 Honda Accord (4cyl) and 2012 Prius since new. Both got over 150K miles with no engine problems. Neither seemed to burn any oil between changes. I did my own changes and was always a bit concerned how thin and watery the 0W-20 was. How in the world did it stick to the cylinder walls?

[38Chevy454]

The myth was that synthetic would cause leaks to start. The reality is that synthetic was cleaning the old deposits that were helping the seals work. So blame the new synthetic.
As long as you maintain the vehicle regularly, changing from dino to synthetic will not cause problems. The synthetic is a 'better oil, and will not cause problems when switching.

[wolf]

Thanks for the inputs. My 2019, Subaru, takes 0-20 synthetic. (I use Mobile 1).

Scotty Kilmar, (you tube), Does not recommend, switching "Old" cars from "Dino" to synthetic. Mentioned, oil burning/leak. However, new cars, all require synthetic.

Any Mechanics out there. What has been your experience? Just wondering, if today's
modern synthetic oil, are more compatible with older high mileage cars.

Thanks in advance.

[Mr._Graybeard]

Quote:

Originally Posted by wolf Thanks for the inputs. My 2019, Subaru, takes 0-20 synthetic. (I use Mobile 1). Scotty Kilmar, (you tube), Does not recommend, switching "Old" cars from "Dino" to synthetic. Mentioned, oil burning/leak. However, new cars, all require synthetic. Any Mechanics out there. What has been your experience? Just wondering, if today's modern synthetic oil, are more compatible with older high mileage cars. Thanks in advance.

Scotty Kilmer is a doofus, a clickbait specialist. Bobistheoilguy has a broad spectrum of contributors, from oil industry pros to service experts (along with some trolls). In that environment, the truth will out.