So in my rear drive manual transmission. There's a bit of vibration in the shifter, which kind of bothers me because it's enough where it'll numb your hand a little. But also gets a little worse the higher the RPMs. I think that maybe just how it's designed. It's carrying over the engine vibration. But some gear oils do better a bit at reducing some vibrations. But I see like a list of oils that are the best, but not really sure which one would actually be best. Just want to hear what opinions y'all have. Right now I got the Valvoline synthetic 75W90G04 boiling. It's about the same as the red line or I've used. And the oil is a little better but there's a bunch of others that are more expensive that are supposed to be better.