ORIGINAL: rwright142
If you are referring to removing the varnish that builds up on the outside, I don't know about oven cleaner but there was a review in Model Airplane News about a product called Dawn Power Disolver. A club member went to Kroger and bought a bottle and tried it on a 20+ year old engine. He says he sprayed it on, waited a few minutes, then scrubbed the engine using an old toothbrush and the varnish came right off.
Yup, i'm talking about the outside, this stuff is almost dark brown/black now. The carb cleaner is hardly working, i spray it on and then use an old toohbrush to clean it off...should i just leave the carb cleaner on there for the night. it'll probably evaporate. i doubt the dawn power dissolver is available in our market but i'll check for it.
Do not use oven cleaner. It will turn the engine black. Don't ask me how I know.
That sounds good enogh for me to not try oven cleaner
