I recently upgraded my stock 2009 Harley Davidson FXDBI clutch using the Barnett clutch pack with the extra disk. The recommended Primary oil with these clutches is ATF-type F transmission oil. I am a true believer in Amsoil oil and it toughness to withstand utter all out punishment. Well a normal Harley rider knows nothing else. I researched others who have used the ATF fluids in their primary and the biggest concern was heat.. I filled and have run this ATF in my FXDB and I am happy with the all around smoothness yet assertive instant response. I have not gone through a heated season with it but do not expect any problems. I am a believer in Amsoil products. I use it in everywhere on my Harley and and Subaru and just enjoy the protected feeling and gains with better gas mileage with minimal wear and tear.

ALWAYS USE AMSOIL SUPER SHIFT IN MY 70 MAVERICK DRAG CAR AND ALL THERE PRODUCTS. ITS THE BEST OF THE BEST THANKS AMSOIL

Amsoil Super Shift is a great product. Highly recommend all of their products.

Amsoil is all use couldn’t ask for anything better from my sons cobras to the big bikes 🤟💪

My 727 loves it

we use this product in two trucks that my boys race in the mud it seems two keep the tranny's cooler with less wear on the steel [email protected]'s.

I run this in the primary of all my Harley Davidson motorcycles. The clutch runs much cooler and less gunk in the bottom each change. I run a very he performance clutch that has high standards for oil that will void warranty. Super Shift is one of the few that qualify for those specifications.

great stuff 565 bbc 2500 stall 700r4 trans. best trans fluid i have used trans shop only uses super shift.

need something close to type 4 ford tranny oil

Highly recommend this product no issues with heat or slipping

Trans shifts great and no signs of wear

Awesome product, transmission shifts great. Used in a built th350

I used this in my sons Ktm 50sx, it was the best product I used in the bike and o would recommend it to everyone!!!