In a message dated 3/24/99 3:06:51 PM Pacific Standard Time, ggallant@RDS.CA
writes:

>   -Should I use synthetic (I don't care to pay some more money if it is
better for the engine.)
Yes, synthetic gives better lubrication and longer life.  The change is worth
it.

>    -If I use the synthetic oil should I use the 5w30 or another grade?
Since you have freezing winters, 5w30 is good for the 6 coldest months as long
as your engine isn't prone to any overheating, and use 20w50 for the warmer 6
months.
Some people use extended intervals before changing synthetic oil since it
doesn't break down like regular oil, but change the filter as you would for
regular oil, and just top up the fluid level.
>    -Should I take some precautions prior to change it or to run the engine
> after the change.  Should I flush the engine with some special liquid before
put synthetic oil.  May I use ordinary oil with synthetic one?
Synthetics are  compatable with regular oil, no special precations needed.
Roger
87 Synchro Adventurewagen