Thanks for the reply.

After I bought the car and changed the oil, I added some automotive camguard (aslcamguard.com/) to the engine. I have used the aviation blend of camguard in my Continental IO-550(Cirrus SR-22) with good results. I use the diesel version in my 1984 300SD. When I change the oil again in the SEL, I will send a sample to blackstone and see what the report says.

Stephen

__________________
Regards,

Stephen

2006 E500 Wagon “Werner”, 114,500 miles
1990 420SEL “Mr. C”, sold
1985 380SL "Hildegard"
1984 300SD “Dieter”, 2nd owner, 66,000 miles
2011 ML350 Bluetec “Baron”, Sold
2011 R Bluetec “Fancy”, Totalled, RIP
1994 S500 Coupe, Sold
1984 300SD 236,000, Sold
1979 300TD, Black Mariah, flooded in Katrina