RE: Black goo
Alcohol doesnt work on the goo. Goof Off does work. Thats what I used. It also takes a little bit of the WBC paint off. It was ok one time. But not many more, it would strip the paint off.
I used pennzoil for a few years with no problems. I just screwed up a mix and I honestly dont know what I did. Just speculating I got distracted and put a double dose of oil in. Cant think of anything else that would have done that. One of those, doh! moments that you hate to admit.
I have the 40 for the stearman on a test stand and will just run more of the stihl ultra synthetic mix I'm using now to clean it out. May take a couple more gallons. Sure wanted to fly the stearman this weekend and be ready for the clubs big bird. But better not to take chances on ruining the paint job.
The g62 is in my new sig sundancer. Its mylar and is easily cleaned up. The problem is the goof off is slowly taking the paint off the landing gear.
Edwin