rickloon
Member
One of my gyros has a 503 for power and they are not making the type of Oil I have been using any more Any ideas as to what would be a good 50/1 oil to use as a replacement?
FRANK'S;n1126697 said:I will try one more time.
The best 2 stroke oil I know and use is Amsoil syntetic 2 stroke 50 to 1
I use it in all my 2 stroke a bit more expensive but well worth it.
make sure it's compatible with your Rotax 503
Eric S;n1126729 said:I've used Super Tech 2-cycle engine oil sold in the blue jug at Wally World for years. It's cheap and available everywhere.
It was recommended to me by an engine guy who used to build trikes (weight-shift). He had a great story about how it was recommended to him by another engine guy who worked for a go-cart racing business. Apparently, they spent much of their time keeping the heads and combustion chambers decarboned and the problem went away when they tried the Walmart brand.
I have had similar experiences in 3 Rotax 582s, a Rotax 503 and in an old old powered paraglider engine for more than 10 years. I check them each annual and they never have carbon buildup. 2 of my 582s are premix and the one on my gyro has the oil pump. It works great both ways.
Sometimes these engines sit for a few weeks without being run, so I've never used synthetic. My understanding is synthetic is great in cars that drive everyday, but too thin for engines that sit, especially in humid environments.
Years ago I used Penzoil for air cooled engines in my powered paraglider and I had the same problem as the go-cart guys. Big gobs of carbon buildup that had to be cleaned regularly. Carbon would plug up the compression release hole after running for only 5 hours. That same engine has no problems with carbon when running Super Tech.
Eric
FRANK'S;n1126696 said:I posted 2 times to try to help you but the 2 times my post was deleted.