Posted: Tue Jan 20, 2009 7:52 pm
Hello Jim,
I would also go for a multigrade 20W50. It is cheap, easy to find, designed for auto engines. I do not recommand synthetic oils on old engines, not for the absolutely fabulous qualities of such oils, but, as said by another contributor, for compatibility with components. The synthetic oil MAY damage the following parts: o-rings, lip seals, rubber gasket and menbranes, ball and roller bearing synthetic cages.
I would simply not like to be the first to take the chance. You can go on some VW forums and ask, you will certainly find people who already tested synthetic oils, and will be able to tell you.
Anyway, one of the main advantage of synthetic oil is the very good capacity to work at hot temps for long periods, which aviators don't like at all, whatever the oil lubricating the engine...
There are no good pilots, only old ones, and old people are conservative...
Bertrand
I would also go for a multigrade 20W50. It is cheap, easy to find, designed for auto engines. I do not recommand synthetic oils on old engines, not for the absolutely fabulous qualities of such oils, but, as said by another contributor, for compatibility with components. The synthetic oil MAY damage the following parts: o-rings, lip seals, rubber gasket and menbranes, ball and roller bearing synthetic cages.
I would simply not like to be the first to take the chance. You can go on some VW forums and ask, you will certainly find people who already tested synthetic oils, and will be able to tell you.
Anyway, one of the main advantage of synthetic oil is the very good capacity to work at hot temps for long periods, which aviators don't like at all, whatever the oil lubricating the engine...
There are no good pilots, only old ones, and old people are conservative...
Bertrand