Hartstoc
Well Known Member
I’ve been using Exxon Elite 20-50 for some time because it contains the Lycoming anti-scuff additive, but the product has been discontinued. Thinking of just going to Aeroshell 100W, though I’ve always been a fan of semi-senthetic multi-viscosity oils.
My engine was oprated on Phillips 20-50 for its first 330 hrs by the previous owner, but I became suspicious of the fact that it remained essentially clean and colorless right up to change-time, and when I switched to a constant speed prop the crankshaft cavity had an ungodly accumulation of black sludge inside. This is normal but the amount was shocking for a low-time engine.
Sure enough, as soon as I switched to Exxon Elite the oil quickly started accumulating a black color, indicating to me that it was doing its job of keeping by-products in suspension so they could be removed with an oil change. The difference was dramatic.
I’ve seen a lot of wear and ring-cokeing with engines running Aeroshell 15/50 so that is out. I’ve got a few changesworth of Exxon Elite on the shelf, but will eventually have to decide.
Any opinions on issues related to going from the multi-vis semi-synthetic to the straight 100W?- Otis
My engine was oprated on Phillips 20-50 for its first 330 hrs by the previous owner, but I became suspicious of the fact that it remained essentially clean and colorless right up to change-time, and when I switched to a constant speed prop the crankshaft cavity had an ungodly accumulation of black sludge inside. This is normal but the amount was shocking for a low-time engine.
Sure enough, as soon as I switched to Exxon Elite the oil quickly started accumulating a black color, indicating to me that it was doing its job of keeping by-products in suspension so they could be removed with an oil change. The difference was dramatic.
I’ve seen a lot of wear and ring-cokeing with engines running Aeroshell 15/50 so that is out. I’ve got a few changesworth of Exxon Elite on the shelf, but will eventually have to decide.
Any opinions on issues related to going from the multi-vis semi-synthetic to the straight 100W?- Otis
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