Recently I was at Auto Zone and I picked up a slick 50 package that contained a fuel system cleaner (1 treatment cleans the entire fuel system, or so they say). It came with a bottle of slick 50 oil treatment.

I was thinking of putting it into my 190e engine. I have 120k miles on the car and thought it can't hurt. What do you guys think? Any of you bless or debless that treatment? Supposed to replace 1 quart of Castrol 20w50 with this, which is a 10x30 grade oil.

Advice, comments welcome!

-=>Raja.

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1983 MB 190E, bought from Germany and shipped to the US in 1986.