I am seeking advice, information and opinions on the choice between
Redline Synthetic and Amsoil for the Mercedes diesel engines. I have
been using Amsoil synthetic on gasoline-powered engines for years with
great success, but have thus far never used the sythetic in my
I have done research on Redline, but find that much of the data is
technical to the point of not being meaningful in terms of a
comparison. Also, I have easy access to Amsoil, but have always had
troubel finding the Redline.
Not exactly on point, but I have used Redline exclusively in all of my cars,
including my (gasoline) C220. I have 240,000 miles on it, and it runs great
and burns no oil.
Your only concern is changing over to a full synthetic oil if you have run
non-synthetic oil long enough to develop sludge in your engine. The higher
detergent effect of the synthetic oil and additive package can cause
problems. Changeover by adding a quart more synthetic with each change,
decreasing the non-detergent volume to compensate. Redline is available on
the internet at jegs.com
I received this advice too late to follow it to the letter. However, I
did flush the engine with Amsoil flush prior to refilling with Amsoil
15-40 synthetic. In the course of flushing, I used a new filter, then
changed filter again prior to adding the new oil. I hope that this
addresses the issue of the sludge.
Thanks again for the information and advice.
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