Quaker State 2 Cycle Oil Case Of 24 8 Oz Bottles

Quaker State® Universal 2-Cycle Engine Oil for Air Cooled Engines is a premium formulation blended from high viscosity index, paraffin base stocks. This oil is fortified with low ash-forming detergency additives, extreme pressure anti-wear components, a pour depressant and a coupling agent to enhance oil-gasoline mixtures.

Designed for use in hot running, air-cooled engines such as Rotax engines, chainsaws, lawnmowers, leaf blowers, string trimmers and 2-cycle edgers, snowmobiles and some two-stroke motorcycles, it can be mixed at any ratio up to 1 gallon of gasoline at popular 40:1 mix ratio.

Quaker State® Universal 2-Cycle Engine Oil for Air Cooled Engines can be used with oxygenated/gasohol fuels and current 87 octane rated gasolines. High flash solvents meet NFPA Class IIIB standards for easy warehouse storage. Meets current JASO standards FA & FB and exceeds API service level TC.

• SDS

Is this the same oil as the Pennzoil was? Any compatibility issues from mixing the two?
Pennzoil has been replaced with Quaker State 2-stroke oil. There are no known issues in the mixing the two.

I need to buy two stroke oil but obviously I am concerned about switching to an unknown oil for my airplane. Is this oil truly a replacement? Does the Quaker State 2 cycle oil meet API-TC specs?
Yes, it is a true replacement. Per the Quaker State website: Meets current JASO standards FA & FB and exceeds API service level TC.

I have Rotax 503 in my airplane. I have used Pennzoil since the beginning and now can't find it anywhere... Is this oil going to be ok to replace? It says it only mixes 40-1, I need 50-1, and can I mix at that ratio?
This is the replacement for the Pennzoil. You can mix at 50-1 without any trouble.