I have a 2017 GTI. A manual transmission flush with the Genuine VW fluid (75 weight, so I hear) will run about $150 for 3 bottles at ECS Tuning. Yipes!
Some people upgrade to the Motul Gear 300 75W-90, but this is my daily driver, so the cold shift issues with that take it out of consideration. I am not tuned, so don't need its extra protection. This is about $75 for 3.
Motul also makes Motul Motylgear 75W-90, the same weight, I don't know what the cold shift quality is, but it is supposed to be for hard to shift gearboxes. It's only $53 for 3 bottles. I wonder what the difference is between it and the Gear 300? Same multiviscosity, same GL-4 / GL-5... AH! This is "semi-synthetic"!
Motul Motylgear 75W 80 has a very slightly higher viscosity range than a single-weight, and is $50 for 3bottles. I'm not sure how it compares to its big brother above. Just a slightly different additive package?
Liquimoly has a 75W-90 as well, I don't know how it compares to the Motuls on cold shifting. Fully synthetic, on sale for $60 for 3 bottles.
The prince range of these (besides the OEM) is not enough to make me choose on that basis. The Gear 300 is out, because: Winter. I do autocross, but nothing extreme. I'm mainly interested in shift quality that is equal or better than using the OEM fluid. Or... are there others I should be considering? Red Line MT-LV 70W-75W synthetic? Would there be a fuel mileage hit going to a 75W-90 fluid?
Some people upgrade to the Motul Gear 300 75W-90, but this is my daily driver, so the cold shift issues with that take it out of consideration. I am not tuned, so don't need its extra protection. This is about $75 for 3.
Motul also makes Motul Motylgear 75W-90, the same weight, I don't know what the cold shift quality is, but it is supposed to be for hard to shift gearboxes. It's only $53 for 3 bottles. I wonder what the difference is between it and the Gear 300? Same multiviscosity, same GL-4 / GL-5... AH! This is "semi-synthetic"!
Motul Motylgear 75W 80 has a very slightly higher viscosity range than a single-weight, and is $50 for 3bottles. I'm not sure how it compares to its big brother above. Just a slightly different additive package?
Liquimoly has a 75W-90 as well, I don't know how it compares to the Motuls on cold shifting. Fully synthetic, on sale for $60 for 3 bottles.
The prince range of these (besides the OEM) is not enough to make me choose on that basis. The Gear 300 is out, because: Winter. I do autocross, but nothing extreme. I'm mainly interested in shift quality that is equal or better than using the OEM fluid. Or... are there others I should be considering? Red Line MT-LV 70W-75W synthetic? Would there be a fuel mileage hit going to a 75W-90 fluid?