What oil?

jjr426 said
just my personal opinion but i find that if you use synthetic oil and your car leaks any oil the synthetic leaks out much faster than conventional oil. If you have a new motor and run synthetic oil from the beginning then i believe in it but the other thing is you cant break in an engine on synthetic oil the manufacturers dont reccomend it so if you have an older /6 and it leaks a little oil like most do i would just run conventional oil myself but again that is my personal opinion. Justin

Sorry Justin, you're close but no cigar. There was a problem with north american engines, 10 yrs. ago, that if you ran synthetic before the engine had 10K on it there was a possibility that the rings wouldn't seat completely. That's no longer a concern, or so says the Pontiac and Dodge dealers and as a matter a fact a lot of the engines are coming out with synthetic already in the engine right from the factory like my wifes new Accord. I've been running Mobil 1 in my vehicles since the early 80's primarily for the reason that as soon the engine starts you've got oil pressure especially in the winter when the wife forgets to plug the block heater in. As an example 5W30 mobil 1 has a pour point of minus 35 whereas conventional 5W30 is sludge at minus 35. Also since synthetics don't break down as easy as convential the engine stays cleaner longer internally, no nasty sludge build up under the valve covers.

Terry