Jbone36
Registered User
89 f450 Zf5 4wd...Not trying to open a can of worms but i keep getting different information from mercon in both to gear oil in both to 80 in diffs and transfer?..my shop manual is missing transmission requirements, thanks
From my own not-very-detailed observations, it seems like a manual transmission with a cast iron case takes 80/90 while one with an aluminum case takes ATF. DO NOT take that as gospel by any means, but it seems to be what I've seen.it seemed alot people were confused like me. Thanks all for clarification.
This is the info I've gone by for several yrs. Iron case = 80/90 while aluminum case uses ATF.From my own not-very-detailed observations, it seems like a manual transmission with a cast iron case takes 80/90 while one with an aluminum case takes ATF. DO NOT take that as gospel by any means, but it seems to be what I've seen.
For a not very relevant to tgis forum exception, my Aluminum cased Toyota manual takes 75w-90.From my own not-very-detailed observations, it seems like a manual transmission with a cast iron case takes 80/90 while one with an aluminum case takes ATF. DO NOT take that as gospel by any means, but it seems to be what I've seen.
Similarly, I have run Redline MTF for 13+ years and around 100k on my rig. At the time I did that the syncros weren't very good with 1-2 being the worst and would always chatter going into 3rd.I run Royal Purple Synchromax in my ZF5 and am very happy with it. It feels like it makes it shift smoother, and maybe makes it a little quieter. The Transfer case gets ATF, but I would look for a synthetic Dexron III/ Mercon spec fluid. The newer Dexron VI/ Mecon LV fluid is significantly lower viscosity. That’s good in an automatic transmission, but not necessarily beneficial in a manual transmission or a transfer case.
I'm only finding Redline MTL. Is that the same thing?I have run Redline MTF for 13+ years
Oh doh. I was running off memory, and that's what I get!I'm only finding Redline MTL. Is that the same thing?
First time was at a local Toyota Dealership as my buddy works there and they are a redline supplier.Quick question. Where you guys find Redline MTL or the Royal Purple Synchromax? I haven't looked round much, just been using regular ATF in the ZF & BG 1356 transfer.