75w90 Gearbox oil in JC5-130

[Krarl]

Hi all,

Wondered if anyone has every used 75w90 in their 172's? Mine will be for fast road/track as a weekend toy and wondered if anyone has ever swapped out the usual expensive GL4 75w80 for something with a larger operating temp.

Seen this on eBay and its half the price of Elf stuff

https://www.ebay.co.uk/itm/Millers-...e=STRK:MEBIDX:IT&_trksid=p2055119.m1438.l2649

Any info is appreciated.

Cheers

 

[Brigsy]

Yep have used it in my kangoo for a while without too much hassle. Still you can pick up the proper elf oil for the same price on ebay.

 

[Krarl]

Yeah just looked and the f*****s have bumped the price up on that oil by about £20! Would rather use Elf or Millers as I can trust them not to stink and be black after 3 months

 

[Brigsy]

https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.co.uk/ulk/itm/323280352422

I have used total gear8 in my dci too dirt cheap from gsf seems decent its gl4 75/80.

 

[Krarl]

Might do the gearbox oil on my dCi too as it's not been done in a few years and probably about 60k lmao

 

[Brigsy]

I have also used dextron II in my Extra van with success, its on jb3 but not a million miles away from jc5. After blowing up a load of gearboxes was recommended it by a drag racer apparantly a lot of the honda lads use it.

Shifts were a lot better over 7k rpm when hot and no more damaged syncro’s. Probably not recommended for lots of miles though lol however held together at 235hp/220ft lbs a lot longer than when running 75/90.

 

[Krarl]

Is that the ATF stuff?

My dCi is a JR5 so it doesn't give a s**t what it has as long as its wet lmao. I'll go for some 75w90 Fully syn and see how it goes, I've got a spare box that's gonna be rebuilt anyway as I know JC5 are made from chocolate and monkey piss

 

[NorthloopCup]

Don’t put atf in the box. It’ll f**king ruin it. GL4 oil is what you need and I recommend redline mtl or redline mt90 for the jc5’s as it protects them from near enough the biggest bell end drivers. Almost anyway.

 

[Krarl]

Mechanical sympathy is my forte. f**king hate people that can't drive

 

[Brigsy]

I wouldnt put atf in a road car however i ran it for at least 5 years in a jb3 no issues and that was with 235hp/220ft/lb and many trackdays. One of my friends ran a jc5 with a quaife lsd fitted - 336hp and that was tracked regular without issue on dextron II. Maybe mechanical sympathy on both accounts.

I also recall a gt turbo running a gripper in a jc5 130 - 400+hp drag car running atf. Snapped both shafts on launch at Santa pod and gearbox still stayed in one piece, no idea how it survived so well to this day.