IcemanG17

Okay as a COMPLETELY BIASED OPINION here is mine (yes I am an Amsoil dealer).....I like Amsoil....yes I have blown engines using Amsoil or sorta amsoil....but I DO NOT attribute that to Amsoil.......

for what its worth....here is my thinking... I will NEVER run dino oil in any 928 I own...no matter how easy I drive it on the street...sure in theory dino oil will be just fine...but I don't trust it..... If my 8400 RPM M3 requires synthetic oil....I consider that a "hint"..

I tried running cheapo dino oil (walmart's cheapest) in my 1st lemons racer...& it blew up..... Why did I run it...because it was leaking so bad "we" made a decision to not "waste" the expensive Amsoil... I am 100% sure it caused the engine to blow up 3 hours short of the race finish... I DO think Amsoil all the time would have finished the race.....but either way the engine was a goner...Amsoil is a high quality product, but it can not make up for a flawed design that the 928 has regarding oil starvation under track conditions..(not street)

vze2jshn

Amsoil also offers a 20-50 for the street which matches the manual recs for my '78 928 5 spd.

IcemanG17

yes it does & it will work no problem..... however I prefer the racing 15-50 since it contains MORE zinc....... for a street driven 928 either is fine...but if you drive on track get the racing oil

Maleficio

How about baffles built into the oil pan to keep the oil locally stabilized?

Hilton

Several factory versions of oil pan baffles over the years in 928's.

Early cars with the mesh screen and shielded pickup seem to be the best, but were dropped presumably for cost reasons. Can be retrofitted, but requires replacing the oil pickup as well.

GTS gained a baffle to prevent oil sloshing backwards in the pan - can be retrofitted easily to cars with the later pickup desgin.

An odd factory-lookingbaffle appeared on ebay in Germany a couple of months ago - a search here for threads with baffle in the title will bring it up.

Erik N

Walmart brand 10/40 synthetic, on sale in 5 quart jugs.
Blasphemy, I know... (But it's a $80,000 car! etc.)