Ex-B5S4 owner hear w/a great link to a post about oil. The poster Tom is an ex-additive engineer
 

who always provides great info. Just thought the turbo S4 crowd would be interested. The Viper forum does not allow direct linking, so here is the URL:

http://vca2.viperclub.org/forums/showflat.php?Cat=&Board=UBB14&Number=52956 2&page=0&view=collapsed&sb=5&o=&am p;fpart=1#Post533247

Thx for the read. Tom seems to be a great resource for the forums there =-)

I had heard about how Castrol Syntech was a "different" synthetic so the info about the 4 classes of
 

oil were nice to see with explanations. Of course no clear answer and as always the needs of a race engine that gets drained and refilled all the time are different than our daily drivers.

Well at least those that do not quite follow oil developments now(me included somewhat)
 

can understand why Mobil1 changed their formulas a while back. Granted this was pre their 0W40 weight was released but the price of their 0W30 should have come down significantly.

Havent heard of GV before, just GIV/PAO with esters. Wondering if this is a proper grouping now or something the Moutul guy just brought up...