I know this is going to sound like an absolute terrible newbie question. But, I am. I haven't owned a classic since they became classics. The last time I owned a slant six was in the 1980s.
Anyway, can I use full or partial synthetic oil in my 225 slant six? What oil is everyone else using?

I use full synthetic and it stays cleaner looking longer,and I change it about 3k or so miles.

Richard

_________________
Part of Tyrde-Browne Racing

Fopar is right on- 5W-30 synthetic if you can afford it.

_________________
Casually looking for a Clifford hyperpak intake for cheap.

This topic has been much discussed on here, but I have used synthetic oil since high school. I only use it once the engine is broken in, but never on a high mileage engine that ran on conventional oil. Did that once and it leaked like crazy. It washed away the goo that had been sealing it up.

_________________
If it was easy, everybody would be doing it.

Definitely.

If the engine is a high miler, just run conventional oil.

For Oregon 5w30 or 10w30 should be just fine...if it's a road oiler you can go to 10w40, but you will be looking to getting the engine rebuilt sooner than later....

Full discussion with tempers etc on this topic here..


http://www.slantsix.org/forum/viewtopic ... hlight=oil

Greg

_________________
http://www.youtube.com/hyperpack

Thanks for the replies. Much appreciated!