This is the product description text that will appear here.
Quantity
1
Description
TRIAX ATF 689 is a premium, full-synthetic automatic transmission fluid engineered specifically for high-performance European vehicles equipped with ZF 6HP, 8HP, and 9HP gearboxes. Trusted by professional technicians and performance enthusi...
Reviews
5.0
7 ratings
5
4
3
2
1
Trying a new Thing
I must say TRIAX provide an awesome delivery service, package came very quickly and well packaged.
My 18 RAM with over 113k miles needed to have its transmission serviced, a thing that the dealership doesn't do, because the manufacturer claims the fluid is lifetime.
I decided to do it myself, while researching and comparing fluids, I like the spec's on the TRIAX 689. It pretty much mirrors the ZF Lifeguard 8 / MOPAR 8&9 speed ATF. This was the first I've ever heard of TRIAX, based on the specs and others reviews I decided to chance it and give it a try.
They end result was Worth taking the risk, my truck's transmission operated flawlessly immediately, it shifted super smooth, with crisp responses. I've logged over 1k miles since servicing and I sold on this product, it's my default choice going forward. Based on the TRIAX 689 specs and price point and performance it's definitely a no brainer.
B
Brandon · May 29, 2026
Good stuff
This fluid did seem to repair an issue with an 8HP in a grand cherokee that would not stay out of park in very cold weather. Transmission did have max life in it. serviced with Triax 689 and it has been problem free.
S
Seth · March 12, 2026
No comebacks
Customers have called back to say how much better their ZF trans is shifting after replacing fluid with TRIAX 689