When should I start using synthetic oil??

[bronsin]

Originally Posted by 1stToyota

Snake oil implies that it's not a good product. Synthetic might not be needed in most makes, but testing often shows that it's a superior product. Hershey chocolate will do the job just fine, but I'd much prefer to pay the extra to get the better Dove dark.

Synthetic oil was delveoped for use in jet (gas turbine) engines where operating temperatures exceed 400 degrees F. Since internal combustion engine temperatures are less than 200 degrees F synthetic oil is not needed. Marketing types saw the need people have for "something better" than the next guy and started the hype.

[1stToyota]

Originally Posted by bronsin

Synthetic oil was delveoped for use in jet (gas turbine) engines where operating temperatures exceed 400 degrees F. Since internal combustion engine temperatures are less than 200 degrees F synthetic oil is not needed. Marketing types saw the need people have for "something better" than the next guy and started the hype.

If it's not needed in cars, just jets, a UOA result will be no better than dino, always, because it's just hype and an overkill to use synthetic...or it does provides better protection and will almost win in a UAO showdown...

[SilverGlow]

Originally Posted by 1stToyota

If it's not needed in cars, just jets, a UOA result will be no better than dino, always, because it's just hype and an overkill to use synthetic...or it does provides better protection and will almost win in a UAO showdown...

You are forgetting one fact:

Synthetic will allow you to go LONGER between oil changes then conventional, and that is reason alone to use it. It can also provide 1% to 2% higher MPG too.

[1stToyota]

Originally Posted by SilverGlow

You are forgetting one fact:

Synthetic will allow you to go LONGER between oil changes then conventional, and that is reason alone to use it. It can also provide 1% to 2% higher MPG too.

I use it because there's the chance that it's a superior, not an inferior product, period. And while I'm depending on Toyota to cover any warranty issues I'll follow the 5k OCI, no matter what oil I use.