Hi All, My car: 12 Cruze LS 1.8L 105k miles. Trifecta + Amsoil trans fluid + 93 octane fuel. My trans has a mind of its own.. some days it will shift like brand new and other days it will jerk like a mother. I had the car and this issue since 40k miles and I'm now at 105k miles. I've changed...

AMSOIL P.I. (Performance Improver) AMSOIL P.I. is fuel additive that cleans the top end of your engine. Specifications: Application: Gasoline Cruzes only Application rate: One bottle treats up to 20 gallons of fuel. Recommended application interval: every 4,000-5,000 miles 44.4% to 53.8%...