Originally Posted By: FowVay
Here is a comment published by Toyota regarding their stance on 5W/0W oils in their product line.
Only Toyota vehicles in which 0w-20 synthetic oil is required (except for the 2TR-FE and 3UR-FBE Engines*)
have been approved for extended oil change intervals of 10,000-miles/12-months. (However, you should continue to check
the oil level regularly and top off if needed. That will help your engine get the full benefit of synthetic oil.)
Vehicles in which 0w-20 is an option to 5w-20 mineral oil, (or 5w-30), will continue to require 5,000-mile/6-month oil
change intervals, even if 0w-20 oil is used.
In the case of vehicles with 10,000 mile oil change intervals, the 5,000 mile service interval has not been eliminated.
The traditional 5,000 mile maintenance procedures (such as tire rotation) will continue to be required, and the fluid
levels (such as brake fluid) will need to be checked and adjusted at this time.
If the vehicle operation meets the standard criteria for "Special Operating Conditions" such as: driving off-road,
on dirt roads, towing a trailer, making repeated short trips under 32ºF, or extensive idling; the engine oil must be
replaced at 5,000 mile intervals, regardless of what type of oil is used.
*The 2TR-FE (4Runner / Tacoma) and the 3UR-FBE (Flex Fuel Tundra / Sequoia) are the exceptions to this
new change interval program; these engines have not been approved for the 10,000 mile interval at this time.
A 5,000-mile/6-month oil change interval is still required for these vehicles. Also, the Flex Fuel 3UR-FBE
requires a 2,500 mile interval when operated on E85.
What they are really saying is we(Toyota) did not test those engines to run 10,000 miles on 0w20. So therefore, You got to do what we told you to do. If you like to run 10,000 mile on 0w20, do your own UOA to see if it can be done. I believe you could run 5000 miles if you use E85 as well.
Originally Posted By: CR94
Originally Posted By: Eddie
... I looked at PP 5w30. WOW, 5W30 has a host of specs that nether the 0W20 or 5W20 don't have. 5W30 meets the A5/B5 spec, the Honda HTO turbo spec. ...
My yellow jug of PP 0W-20 claims to meet Honda HTO. That's good to know, considering 0W-20 isn't required to meet the TEOST coking tests, as I understand.
That Toyota information FowVay quotes is curiously silent on the subject of 5W-20 synthetic oil. I have trouble seeing why it wouldn't be as good or better than corresponding 0W-20 of the same brand, if extreme temperatures are not involved, and base oil quality is similar.
Sure we all know 5w20 full synthetic oil is good oil. And it could be better than 0w20 full synthetic. But Toyota probably doesn't want to confuse people and figure people in using the cheapest 5w20. So they take the easier route of that the cheapest 0w20 is better than the cheapest 5w20.