I ran it for a while, I use valvoline oils in all my gassers. I ran it for a while and switched back to Penzoil synchromesh, Penzoil seems to be so much smoother which os probably my imagination. I don’t know what amazon has but I bought the Penzoil at my local Napa for $9.99 per quart. So $20 for a transmission oil change that last about 100k.