For two years I have been using Wildcat. I've used about 14 gallons. Prior to that I used Rich's brew for a couple years. Then 3 years using Omega then there were about 3 years using Rich's brew then Omega back in the 90's.

I like the Wildcat Premium Xtra and have been using 10 % nitro - 18% oil. I used 15% nitro in the other brands.

I have a couple cases of Wildcat 20-20 and it runs with a lot of power. No Castor oil just 20% synthetic.

Regular Wildcat Premium 10 or 15% nitro fuel just has 16% oil though. the ratio of synthetic to castor is 80/20

Omega and Rich's brew are 17% oil

The ratio of synthetic to castor in Omega is 70/30 and in Rich's Brew it is 75/25

I never had any bad fuel in any of these. It is a matter of availability and right place at the right time.

Regular Cool Power is OK if you put a couple ounces of castor in it.

Cool power four stroke has all the same ratios as Omega and runs good