Mobil Fluid 424 vs. Shell Spirax S4 TXM

csm6795 · Feb 12, 2013

Opinions on which would be best for CK27 gear

RickB · Feb 13, 2013

Either will be fine.

krazsk · Feb 13, 2013

csm6795 said:
Opinions on which would be best for CK27 gear

The one that costs the least.

gkm · Feb 13, 2013

krazsk said:
The one that costs the least.

All I know is that I just did my 50 hr maintenance and the spirax quieted the hst substantially. I can't speak to the mobil, but I assume its specs are similar to shell and it's also a recommended replacement oil. I agree, buy what's cheaper and give it a shot.

kiotiken · Feb 13, 2013

gkm said:
All I know is that I just did my 50 hr maintenance and the spirax quieted the hst substantially. I can't speak to the mobil, but I assume its specs are similar to shell and it's also a recommended replacement oil. I agree, buy what's cheaper and give it a shot.

Is your HST loud? I might have had a little noise with my CK30 HST, but the DK45 HST makes NO HST noise. You must be enjoying that cab, you're really racking up the hours fast!

MichiganIron · Feb 13, 2013

Either fluid is recommended by KIOTI Tractor. If it was a HST, we would recommend the Shell Sprirax. We have had excellent results with the Spirax (Donax) in HST Transmissions.

csm6795 · Feb 13, 2013

Thanks for the replies. The local wally world carries the Spirax so it looks like that's what I'll be using. Thanks again!

WilliamBos · Feb 13, 2013

Is Spirax synthetic??

gkm · Feb 13, 2013

kiotiken said:
Is your HST loud? I might have had a little noise with my CK30 HST, but the DK45 HST makes NO HST noise. You must be enjoying that cab, you're really racking up the hours fast!

I wouldn't say loud, but it had a whine that's now gone. Seems smoother too.