[Remmy700P]

Originally Posted by GORILLA

hi quick info. if you bought a used tundra, and you can get the info as to what oil was used. use that.
if your vehicle used reg. oil for 30,000 miles continue to use reg. oil. if it used syn. oil continue to use that.
never go back & forth.
or change after alot of miles.
i got this info from several different performence shop's.
how good is this info, i'm not to sure. but i only use reg. oil, but i change it every 2000 to 2500miles.

oil gets dirty from the dirt in the air passing through & into the engine.
so the cleaner the oil the less dirt in your oil.

so continue to use what ever they used before.
unless it's brand new. than use what you want, but do not change.
gorilla

Hey Gorilla~

I think I'm gonna have to disagree with your conclusion here. Other than the potential for a light seepage by switching away from dino to syn (if the leak was already there, btw...), then there is nothing wrong with using synthetic, switching back and forth, mixing dino and synthetic (at the same v-rating of course...), etc. As long as the engine has sufficient volume of proper viscosity lubrication, all is fine.

Duff