I finally got around to installing this fluid, part number XT-4-QGL, in my Corolla.
https://www.fcsdchemicalsandlubricants.c...mission%20Fluid
I've reported here in several threads how any synthetic fluid produces notchy shifting. Synthetic GL-5 was unshiftable. Previously, I'd had the best success using Valvoline conventional GL-5 with a bottle of Lubegard gear fluid supplement. That cocktail has been in for the previous 10,000 miles and all of a sudden over the last few days, it became very hard to shift into 3rd and 5th gears. It's been very cold here lately. I thought something was broken in the trans; linkage, bushings etc., but I checked everything and made sure the clutch was releasing completely and it is. So I installed the Ford fluid to see if it would fix the issues. It has and it's shifting better than it ever has. I don't know if the Valvoline fluid all of a sudden broke down or what. never had that happen where all of a sudden, the trans shifting becomes almost impossible (using a fluid that previously has worked well in the past) and a fluid change fixes it.
Found this thread on a Suzuki forum where others have reported the use of the Ford conventional fixed their problems and that synthetic GL4 didn't work. In some older transmissions, synthetic must be too slippery to get the synchroes to work.
http://www.suzuki-forums.com/suzuki-side...ft-problem.html
https://www.fcsdchemicalsandlubricants.c...mission%20Fluid
I've reported here in several threads how any synthetic fluid produces notchy shifting. Synthetic GL-5 was unshiftable. Previously, I'd had the best success using Valvoline conventional GL-5 with a bottle of Lubegard gear fluid supplement. That cocktail has been in for the previous 10,000 miles and all of a sudden over the last few days, it became very hard to shift into 3rd and 5th gears. It's been very cold here lately. I thought something was broken in the trans; linkage, bushings etc., but I checked everything and made sure the clutch was releasing completely and it is. So I installed the Ford fluid to see if it would fix the issues. It has and it's shifting better than it ever has. I don't know if the Valvoline fluid all of a sudden broke down or what. never had that happen where all of a sudden, the trans shifting becomes almost impossible (using a fluid that previously has worked well in the past) and a fluid change fixes it.
Found this thread on a Suzuki forum where others have reported the use of the Ford conventional fixed their problems and that synthetic GL4 didn't work. In some older transmissions, synthetic must be too slippery to get the synchroes to work.
http://www.suzuki-forums.com/suzuki-side...ft-problem.html
Last edited by a moderator:
