Originally posted by: SilthDraeth
Originally posted by: nakedfrog
Originally posted by: SilthDraeth
Originally posted by: kingtas
All I know is that my cars didn't leak oil until I put synthetic in them.
That isn't a problem with the oil.
Synthetics are usually more resistant to sludge build up etc. They also do not mix perfectly with conventional oil. Sure the two will dillute each other, but it isn't perfect.
Your car leaking oil means there is a problem with your seals somewhere, and the oil is getting through it. Those seals may have been sludged up before you ever added synthetic.
It is and it isn't... odds are that they probably would have continued to not leak if he'd kept using dino oil. I've always heard that it's generally a bad idea to switch to synthetic if your motor has a lot of miles on it for precisely this reason.
I edited my response because I had a bit of false information.
You are right, in a sense. If your car has a 100k miles and is running a little rough, but doesn't leak oil, putting synthetic in it isn't going to do you any good. It is sort of like painting a rotten board. The board is still rotten beneath the paint. The paint is going to just fall off with pieces of the wood. If the wood is brand new, the paint is going to protect it, and better paint will protect it more. But good paint over old paint that let the board rot a bit isn't going slow the rot.
Same thing, if your auto transmission is having problems a flush may kill it, but it wont hurt a brand new transmission.
It's trying to do to much to late.