What Oil do you guys recomend/Use ?

[Split]

is running amsoil 0w-20 okay or is it too thin?

[gid]

Originally Posted by Split

is running amsoil 0w-20 okay or is it too thin?

in the T.S.B. by TOYOTA says 5w-20 only , not 0w-20 . Here's the T.S.B. number , TS-EG018-06 ( the last 2 digits are the year T.S.B. was / is released ) . Got the TOYOTA service department where the '08 YARIS sedan was purchased to e-mail the T.S.B. as confirmation and saved the T.S.B. ( copied from P.C. ) in case of warranty issues with the use of the 5w-20 , says 5w-30 on oil cap and in owners manual . Best to be safe than sorry .

[anonymous user]

I like Eneos. 5w-30. I'll be switching over all my cars from Redline soon.
Probably still use M1 in the yaris, but i'll try it out and see.

[SilverGlow]

Originally Posted by gid

in the T.S.B. by TOYOTA says 5w-20 only , not 0w-20 . Here's the T.S.B. number , TS-EG018-06 ( the last 2 digits are the year T.S.B. was / is released ) . Got the TOYOTA service department where the '08 YARIS sedan was purchased to e-mail the T.S.B. as confirmation and saved the T.S.B. ( copied from P.C. ) in case of warranty issues with the use of the 5w-20 , says 5w-30 on oil cap and in owners manual . Best to be safe than sorry .

If Toyota says we can use 20 weight oil, then that means 0W-20 and 5W-20. At operational temperature both these oils will protect the same. The only difference is that in very cold temperatures, the 0W will pump a bit easier, but not a lot easier then the 5W.

Same for 5W-30 and 0W-30....an engine that runs on one can run on the other.

[1stToyota]

Originally Posted by SilverGlow

If Toyota says we can use 20 weight oil, then that means 0W-20 and 5W-20. At operational temperature both these oils will protect the same. The only difference is that in very cold temperatures, the 0W will pump a bit easier, but not a lot easier then the 5W.

Same for 5W-30 and 0W-30....an engine that runs on one can run on the other.

The way I heard it explained from an expert was that the wider the viscosity the more polymers are needed and the harder it is for the molecules to stretch...something like that...under stress and heat the 5w-30 performs better.

[SilverGlow]

Originally Posted by 1stToyota

The way I heard it explained from an expert was that the wider the viscosity the more polymers are needed and the harder it is for the molecules to stretch...something like that...under stress and heat the 5w-30 performs better.

Not according to Toyota engineeers....thiner means better circulation and faster....

[1stToyota]

Originally Posted by SilverGlow

Not according to Toyota engineeers....thiner means better circulation and faster....

You missed the part about the extra snake oil polymers that are required to get the wider viscosity rating and how they react under stress and heat, besides, owner's manual states 5w30 not 0w30 for the Yaris

[SilverGlow]

Originally Posted by 1stToyota

You missed the part about the extra snake oil polymers that are required to get the wider viscosity rating and how they react under stress and heat, besides, owner's manual states 5w30 not 0w30 for the Yaris

Your friend is not the "expert" you thought ;-)

This is because Amsoil and Mobil1 and all the others disagree with him. You see, Amsoil is the best and it makes 0W-20 and 0w-30 and tens of thousands of cars using it are not failing. In addition, UOA for those oils shows very, very low wear...so much for the "molecues cannot stretch" comment.

I would suggest we all pay a visit to BobIsTheOilGuy.com and read the forums on oil there....a lot of superstitions will die if you do...at least they did for me.

[TheSilkySmooth]

Originally Posted by SilverGlow

If Toyota says we can use 20 weight oil, then that means 0W-20 and 5W-20. At operational temperature both these oils will protect the same. The only difference is that in very cold temperatures, the 0W will pump a bit easier, but not a lot easier then the 5W.

Same for 5W-30 and 0W-30....an engine that runs on one can run on the other.

Not exactly correct engine lubricant may not get to designated operational temp and viscosity of the 0W will be much less than the 5W at say 75 celcius. I am Chemist!
Make Love not Bombs! I see TSB b4 it states NO 020!

[SilverGlow]

Originally Posted by TheSilkySmooth

Not exactly correct engine lubricant may not get to designated operational temp and viscosity of the 0W will be much less than the 5W at say 75 celcius. I am Chemist!
Make Love not Bombs! I see TSB b4 it states NO 020!

If you're a chemist then you should know better....the 20 in 0W-20 and 5W-20 provide the same protection at full operating temperature (around 212 degrees F).

It is the first number, the 0 in 0W-20 that is thinner at cold temperatures then 5W.

And Gid yes you are correct, the Yaris engine is not TSB'd for 0w, but rather for 5W-20. However I do use 0w because the UOA reports I've seen from other Yaris owners show the same wear metals as those that used 5W-20.

[TheSilkySmooth]

Originally Posted by SilverGlow

If you're a chemist then you should know better....the 20 in 0W-20 and 5W-20 provide the same protection at full operating temperature (around 212 degrees F).

It is the first number, the 0 in 0W-20 that is thinner at cold temperatures then 5W.

And Gid yes you are correct, the Yaris engine is not TSB'd for 0w, but rather for 5W-20. However I do use 0w because the UOA reports I've seen from other Yaris owners show the same wear metals as those that used 5W-20.

You are dangerouse person with a little knowledge to be bad, but not enough education to make interpolation. You may have to study some more - This Bob OIly Guy is no Koran!

[gid]

Originally Posted by SilverGlow

If Toyota says we can use 20 weight oil, then that means 0W-20 and 5W-20. At operational temperature both these oils will protect the same. The only difference is that in very cold temperatures, the 0W will pump a bit easier, but not a lot easier then the 5W.

Same for 5W-30 and 0W-30....an engine that runs on one can run on the other.

says not to . Only for CAMRY , etc.. If you want to risk it , then go for it .