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Originally Posted by Haoleb
Im planning on doing my own oil changes from now on and while looking through the paperwork from when i had my truck serviced with the 75k mile maintenance it says they put 8 quarts of 15w40 oil in there. Huh! Now i know it doesnt take 8 quarts, and i thought the tundra V8 uses 10W30 or 5W30.
I also plan on using Mobile 1 synthetic and Im not real sure if it would be better to buy the 5W30 or 10W30, The oil cap says 5W so I assume that would be best. But being in hawaii im not worried about the oil being too thick when its cold because it just doesnt get real cold. I have searched the arcives but never found anything real definitive.
I believe in the haynes manual it said to replace the seal on the drain plug, is this something that needs to be done? And where would i get one.
Thanks For the help. This might be beaten to death already but hopefully we'll get some good info for future searches.
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I think your dealership has knuckleheads working at it. FIND A NEW DEALER! they apparently dont know a thing about motor nor do they follow what toyota specifies which is 5w-30. 5w-10 is clearly marked on the fill cap and that is the "heaviest" weight it should have. i say "heaviest" because you could technically use a zero weight type (0w-30) and provide your engine with a little better oil flow rate at start-up. the manufacturer basis its engine oil lubrication on the dynamics of the lubrication system and using too "heavy" of a motor oil could cause your engine damage at start-up.
if you are going to switch to synthetic, i would first consider how many miles you have on the the engine. if you have an excess of 20k i would be reluctant go to synthethic because the engine seals have already seated and have been seasoned by the conventional oil. an engine that is swapped over to synthetic oil later after this seasoned period is prone to oil leaks. if this does not apply to you , go with the synthetic and use the 5w-30.
finally i would only change the seal washer at every 5th oil change or when they begin to seep. and if your the anal type, do it everything you change the oil, it will only add a buck to the price oil the oil change.
good luck and stay out of the snow