Re: six-cylinder oil capacity
"Built_Well" <Built_Well_Toyota@hotmail.com> wrote in message
> Here's a tech tip about overfilling oil from "Auto Upkeep."
> The book thus sprach:
> "If one is good, then two is better, right? Not always.
> Engine oil contains detergents to help clean particles
> and other materials in the engine, similar to soap in a
> washing machine. If you overfill your engine oil, you will
> get air bubbles. Air does not have much of a lubricating
> ability. And adding too much oil can increase oil pressure
> causing failure to various seals and gaskets."
> Oh, oh, I would not overfill. Stick with the manual, and
> you should be fine.
An additional 1/2 quart of oil is not enough to cause "air bubbles"
(normally referred to as "foaming")
Your "Auto Upkeep" book is incorrect in that adding too much oil cannot
increase oil pressure. Oil pressure is a function of the oil's properties,
the oil pump, engine RPM, and bearing clearance.
The OP should fill the oil so that the dipstick indicated "full" after the
engine has been sitting for a while, even if it is a half quart more than
indicated in the owner's manual. As I mentioned above, 1/2 quart too much
will not cause any problems, and then the OP has a mark on the dip stick as
a reference when checking oil for oil consumption.
Also, the OP is inserting the dip stick all the way down into the tube,
(correct punctuation to reply)