Eliot

I have had great results with Mobil 1 15w-50 in both the 190e (220k miles) and the 300E (221k miles). These cars both get a lot of miles per year about 70% highway in the mix.

The 300E had an oil leak at the upper cover seal which needed to be replaced, I did that and now the engine seems great. The head has never been off the car, BTW.

I would recommend the Mobil 1 15w-50 with confidence. The Mobil One 5w-30 weight seems too light, even for the cold New Year climate that I am familiar with.

Haasman

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'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)