OK, here it goes. My daughter's newly purchased 1989 300TE had an engine rebuild at 126K (head job, new pistons, valve seals, etc.). Since the rebuild, the previous owner has used nothing but Mobil 1 oil (he even gave me a case of Mobil1 when I bought the car from him). I bought the car with 146k in the odometer and now that the car is reaching 150K I am getting ready to take it for the 150K service.

My mechanic advises against using Mobil 1 (he really doesn't like Mobil 1 or any other synthetic oil).

I figure that since the car has been using Mobil 1 since the engine rebuild, I might as well continue the "tradition."

What do you guys think?

By the way, in 3K miles the car has not consumed any oil.

I'd appreciate hearing about your own experiences in this area.

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Current Benzes

1989 300TE "Alice"
1990 300CE "Sam Spade"
1991 300CE "Beowulf" RIP (06.1991 - 10.10.2007)
1998 E320 "Orson"
2002 C320 Wagon "Molly Fox"

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