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"I am very
interested in your opinion on the following:
Would it be correct to assume
that based on your experience, you would choose a straight 50 weight over
Phillips 20W50 for a big bore TCM engine run at above 85% power?
Walter"
Walter,
definitely for dyno testing and possibly for real world flying. If cold starts
are not a problem and oil pressure does not get to high and decent oil temp is
obtained before take-off, then yes. Like so many things in life.....so many
trade offs. I'll probably put 20W50 in my TSIO 550 even though I live in
Phoenix. I'll be in Denver and I would not like the straight 50W there. I am not
a fan of changing oil brands or viscosity. I pick something and stay with it. By
the way, in my opinion Phillips makes a good oil relative to
durability.
Craig
Berland
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