Originally Posted by tjj_440
I have always heard that switching to synthetic can cause your motor to leak where it never did before. Plus if you dont like it, it will be a pain switching back to conventional oil due to having to flush the motor to get out all the synthetic.
Only if you switch to synthetic with a high milage engine.
Synthetic oil has detergent in it and it cleans your engine....if it is a high milaged engine the sludge in the engine is whats keeping you engine from leaking oil....the synthetic oil cleans the sludge around your seals and they begin to leak.
Changing back to non synthetic oil does not require any flushing.
What do you think Synthetic blend oil is?