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The best protection against wear is probably a product that is a little thicker (such as SAE 10W-30 or 15W-40) and has more antiwear additives than the oils that support the warranty. The best oil for your vehicle depends on your driving habits, the age of your engine and the climate you drive in, but it is not necessarily the type of oil specified in the owner’s manual or stamped on the dipstick.
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...Outdated and notice the wording "probably". ...
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What would be your explanation to as why every other country than the U.S specifies thicker oil for the same engines, other than we are so CAFE (Caring About F-ing Enviroment).
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What would be your explanation to as why every other country than the U.S specifies thicker oil for the same engines, other than we are so CAFE (Caring About F-ing Enviroment).
I would say they don't have CAFE so they use what they have always used.
I would challenge ANYONE if you know of any premature engine failures or failures in general for cars that call for 5w-20 grades? UOA's have been flawless and they have been in use now for hundreds of thousands of miles.