5w-20 motor oil : who's using it ? ...

[gid]

here's a concern , on T.S.B. ( http://www.automotiveforums.com/vbul...d.php?t=604802 ) for WARRANTY it states " NOT APPLICABLE TO WARRANTY " , does this mean TOYOTA is not responsible for the use of these oils in their engines ? Makes me wonder if they've done enough research and we are the lab rats . Many TOYOTA owners are having an issue with TOYOTA for the TACOMA frame that's rotting out and breaking . Especially for those who own the 2001 and 2002s , so my trust in TOYOTA is not 100% . Last , since the switch from 5w-30 > 5w-20 there's more engine noise , it's most noticeable at high speeds on the interstate . Seems like it could be the timing chain , . I'm considering to dump this fill of 5w-20 and go back to 5w-30 . The oil is PENNZOIL Platinum which is highly regarded at www.bobistheoilguy.com for U.O.A.s . If curious , http://www.bobistheoilguy.com/forums...Board=3&page=1 , there are other good U.O.A.s for the PLATINUM 5w-20 on other pages , so I doubt it's the oil .

[1stToyota]

Originally Posted by gid

here's a concern , on T.S.B. ( http://www.automotiveforums.com/vbul...d.php?t=604802 ) for WARRANTY it states " NOT APPLICABLE TO WARRANTY " , does this mean TOYOTA is not responsible for the use of these oils in their engines ? Makes me wonder if they've done enough research and we are the lab rats . Many TOYOTA owners are having an issue with TOYOTA for the TACOMA frame that's rotting out and breaking . Especially for those who own the 2001 and 2002s , so my trust in TOYOTA is not 100% . Last , since the switch from 5w-30 > 5w-20 there's more engine noise , it's most noticeable at high speeds on the interstate . Seems like it could be the timing chain , . I'm considering to dump this fill of 5w-20 and go back to 5w-30 . The oil is PENNZOIL Platinum which is highly regarded at www.bobistheoilguy.com for U.O.A.s . If curious , http://www.bobistheoilguy.com/forums...Board=3&page=1 , there are other good U.O.A.s for the PLATINUM 5w-20 on other pages , so I doubt it's the oil .

They say to use 5w-20 that will void the warranty?
And also in the very same *updated* Toyota TSB they cover themselves again when saying it's okay to use 5w-20, but see the attached *note*...

Quote: "The recommended viscosity grade for this oil differs according to vehicle model. Use the recommended grade specified on the oil filler cap or in the Repair Manual or Owner’s Manual for each vehicle."

[RagnaCaT]

Originally Posted by gid

here's a concern , on T.S.B. ( http://www.automotiveforums.com/vbul...d.php?t=604802 ) for WARRANTY it states " NOT APPLICABLE TO WARRANTY " , does this mean TOYOTA is not responsible for the use of these oils in their engines ? Makes me wonder if they've done enough research and we are the lab rats . Many TOYOTA owners are having an issue with TOYOTA for the TACOMA frame that's rotting out and breaking . Especially for those who own the 2001 and 2002s , so my trust in TOYOTA is not 100% . Last , since the switch from 5w-30 > 5w-20 there's more engine noise , it's most noticeable at high speeds on the interstate . Seems like it could be the timing chain , . I'm considering to dump this fill of 5w-20 and go back to 5w-30 . The oil is PENNZOIL Platinum which is highly regarded at www.bobistheoilguy.com for U.O.A.s . If curious , http://www.bobistheoilguy.com/forums...Board=3&page=1 , there are other good U.O.A.s for the PLATINUM 5w-20 on other pages , so I doubt it's the oil .

Originally Posted by 1stToyota

They say to use 5w-20 that will void the warranty?
And also in the very same *updated* Toyota TSB they cover themselves again when saying it's okay to use 5w-20, but see the attached *note*...

Quote: "The recommended viscosity grade for this oil differs according to vehicle model. Use the recommended grade specified on the oil filler cap or in the Repair Manual or Owner’s Manual for each vehicle."

Nope what it mean is that you can't go to Toyota and have change it under warranty. Which means you pay for the change! Also that our series engine has to be in the TSB for 5w20 which is 1NZ

[1stToyota]

Originally Posted by RagnaCaT

Nope what it mean is that you can't go to Toyota and have change it under warranty. Which means you pay for the change! Also that our series engine has to be in the TSB for 5w20 which is 1NZ

I don't know what free oil change claims has to do with this part of that Toyota TSB...

Quote: "The recommended viscosity grade for this oil differs according to vehicle model. Use the recommended grade specified on the oil filler cap or in the Repair Manual or Owner’s Manual for each vehicle."

Looks like it's pretty plain to me: "Use the recommended grade specified on the oil filler cap or in the Repair Manual or Owner’s Manual for each vehicle."

[RagnaCaT]

Originally Posted by 1stToyota

I don't know what free oil change claims has to do with this part of that Toyota TSB...

Quote: "The recommended viscosity grade for this oil differs according to vehicle model. Use the recommended grade specified on the oil filler cap or in the Repair Manual or Owner’s Manual for each vehicle."

Looks like it's pretty plain to me: "Use the recommended grade specified on the oil filler cap or in the Repair Manual or Owner’s Manual for each vehicle."

Exactly but in the TSB 5w20 is specified for the 1NZ so what there doing is "If you don't understand this just do what the cap says" That way Toyota never misguided you and washes their hands. So if you every have an issue remember TSB number or the Cap and your fine when your up against Toyota cuase they specified there options so both are OK

[dallas]

Wear metals in testing do go up for me with 5w20, best results with 0w30.

[SilverGlow]

Originally Posted by dallas

Wear metals in testing do go up for me with 5w20, best results with 0w30.

Not true in every case, every climite, every season.

The wear numbers I get using 0w-20 versus 0w-30 are the same.

[1stToyota]

Originally Posted by RagnaCaT

Exactly but in the TSB 5w20 is specified for the 1NZ so what there doing is "If you don't understand this just do what the cap says" That way Toyota never misguided you and washes their hands. So if you every have an issue remember TSB number or the Cap and your fine when your up against Toyota cuase they specified there options so both are OK

Both are okay, if you don't mind the extra noise with 5w-20. To me extra noise = extra wear.

[SilverGlow]

Originally Posted by 1stToyota

Both are okay, if you don't mind the extra noise with 5w-20. To me extra noise = extra wear.

Your opinions lack scientific bases, and you use "noise" to determine wear?

People that go to college and learn science know that actually using highly controlled and scientific tests, like a used oil analysis to ascertain wear is far more conclusive.

And if you use noise to decide, did you run your car in a sound studio, and monitor the noises with fined tuned computer monitors? Did you do before and after tests?

Did you graduate from highschool?