ORIGINAL: Antique
Surprise, surprise, you added oil and got more power...
People still think 100-1 oil is better ????
I was already running at 30:1 Mobil 2T sythetic. Then added 1 oz castor. Mobil is know for very clean burning but higher temps and reduced rpm.
I'm switching to Pennzoil air cooled at 32:1 and see what I get.