I ran 100:1 Amsoil for 2 years straight. Engine started acting up and I sent everything in,including my DA mufflers.
The mufflers were plugged with hard carbon build up so bad that DA recommended me buying new ones and I did.
Think about how little oil I was running and yet it had so much build up to clog the stock mufflers. I can't imagine running 50:1 Amsoil lol
I bought a second hand omp edge 540 back in 2008. I think the previous owner flew it for 4 or 5 years. That dates the engine near 2003 or 2004. It was a da-50. Swung a Vess 23a. Amsoil Saber at 100:1 for 5 years. Same thing happened to me. Here's what I did to fix my engine:
Switched to red line at 40:1
Took jug off to clean carbon from piston and ring lands, replaced the ring with new one from DA.
Cleaned muffler with dawn power dissolver about 3 times. Could not believe the cap that came out. Each time I rinsed the muffler from sitting overnight after taking toothbrush to it, it belched out a visceral black mess with chunks. It did clean up well after 3rd soaking.
I also used the dawn power dissolver to clean piston.
Slapped her back together and went flying. Tweaked engine tune for the first gallon of gas quite a bit. The engine came alive, I swear it. Before it felt sluggish from being restricted in the exhaust but after a year on redline that engine was running perfect.
It is now in an agtruk.
Still ticking away. I do believe I was the first one at our field running redline. I remember taking a lot of flack for being a da and redline fanboi. Now I see more da's and redline oil at our field now. Ain't that correct
@Terryscustom ??
Eventually tried one of sullivan's canisters and that toned down the noise a bunch. i really enjoyed this airplane. sometimes i wish i still had it.