but....

I think for non-performance cars,
it is safer,
to use dino oil more frequently(3 months or 5k miles)
than to use synthetic once a year.
Oil can last long,
but not the filter or additives in the oil
Maybe I am a little conservertive.

If you live in a very cold place
For sure synthetic is a must.

所有跟帖： 

• 回复：but.... -internuts- ♂ (954 bytes) () 03/14/2009 postreply 10:09:42

• A famous Dr Marshall Booth advocated syn oil over dino -internuts- ♂ (540 bytes) () 03/14/2009 postreply 10:32:00