Originally posted by MyAeromodelling
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To further keep the engine in good condition, I have been using after-run oil each and everytime after end of the day. For me its better to have oil rather than nothing inside the engine for added protection.
The after-run is also owned blend ie 50% car gasoline fuel injector cleaner and 50% regular automatic transmission oil.
Based on my experience so far with the engine and what I believe is the most important thing to know about the engine is that ---- MVVS really performs best with a 0% nitro and less than 15% oil, in my case it is a 10% pure castor.
To keep the exhaust screws tight, use only metal-to-metal contact faces, and take care that all powder coat that might be present on the exhaust adapter flange is removed. I use no flange compound or anything else between the joint, and have not experienced leaks and/or loose connections.
10% oil is not recommended. You may get away with it for some time, and it is proof of the sturdy material combinations that MVVS uses. but I would recommend at least 15%, and even then, the engine must be run in well before using such a low oil content.
Feel free to call me old-fashioned :-).
Just plain automatic transmission fluid, (this is not transmission oil!), will do the after run job just as well. Some injector cleaning fluids will mix with methanol, and when blended to the fuel, will keep the engine clean inside.