My PST J600R specifies 5% oil in the fuel, all my other engines specify 3% including the very similar Wren 54 based engine. This means I have to keep two separate fuel systems and I would prefer to have just one. Will the PST work happily with 3% oil?

Harry

We are not recommending 3% mix even though the engine will tolerate it. We are concerned with the long term health of the turbine. However, you can use 5% mix on all 3% mix turbines

Regards,
Kraivuth S.