Gear oil

I have seen it before but now can't find it. How many quarts of gear oil is needed to change all fluids. Front and rear diff, trans and transfer case. And I see gl4 is best for the trans can I use gl4 for everything?

 

Doubtful. Suspect that GL5 is the spec for the everything else.

Sorry I can't help with the capacities, but someone will be along shortly with that data.

I can however suggest you consider using

$34 Ford XT-M5-QS Full Synthetic Manual Transmission Fluid - 1 Quart , black

Ford XT-M5-QS in the transmission. It's a GL4 product. It's expensive. But it can be bought OTC at a Ford shop (or ordered in). I've had lots of folks with notchy shifting in track run sports cars just rave over the improvements after a few hundred miles of use. No, it can't fix worn stuff, but it certainly can work quite well. And going to 50k intervals with that product offsets the cost a bit.

If you do go with the Ford product, make sure they give you the correct PN. Most counter jockeys have never heard of the stuff, unless the dealership happens to have a sizeable SVO/SVT clientele. @shakerhood might have some thoughts on this too.

For the other boxes I'd just use Mobil 1 OTC gear lube. Easy to find, decent quality. No real value added by using boutique elixers.

 

Never actually changed mine as of yet. But, I believe you can look it up through one of those service manuals that can be downloaded online.
I recommend Amsoil or Redline gear lubes. They're spendy but are very high quality and you will get lot of life out of it.

$30 75W-90 Synthetic Gear Lube - 1 Quart (Pack of 2)

75W-90 is the weight you need. I think Amsoil's website actually tells you how much the diffs hold, but, idk if it's accurate.

 

I found this extremely helpful when I first changed all my fluids.https://youtu.be/eDNYzMONxEk
I usually go with Royal Purple 75w90 on both diffs, transfer case and I go with Redline MT-90 for my transmission.(if you drive a manual) I may try all Redline next go around. It’s pricey but it’s the best stuff out there hands down.

 

Amsoil 75W-90 for front/rear diff and transfer case

https://www.amsoil.com/shop/by-product/gear-lube/severe-gear-75w-90/

 

I think the front case uses about 1.1 qts, rear is about 2.6qts, transfer case is ~1qt, and transmission is around 2.5-3. These are estimates based on my memory. I have my manual at home i can look at later if you need.

 

I think the video above, the guy shows the section in the manual.

 

I don't think the front or the rear diff required more than 3 quarts each if I remember right...the t-case was definitely under 3.

I think the 5 speed trans was around 4 quarts. I bought a gallon of the Redline MT-90 oil for it and used about 2/3 of it.

The video posted above is the same one I referenced the first time I did all my own oils and it helped with the amounts, it's also in the owner's manual if you still have it.

Make sure to buy new crush washers for each of the plugs, you can get a bag of them off of Amazon for $10

 

What is a good price for a shop to charge for drain/fill of the above 4 fluids? (front diff, rear diff, transfer case, manual tranny). Just labor, not fluids. I'm thinking an hour of labor?

I'm about 5,000 miles from my next interval and I just don't know when I'll have the free time/decent weather to do everything myself.

Hope I didn't hijack this thread. If so, I'll start a new one.

 

I would really try to do them yourself if you can, I don't remember the last time I had a shop do it but it was WAY overpriced. The rear diff, t-case and trans are easy and you could probably do in under an hour. The front diff is a little harder since you have to drop the skid plate.

I think Toyota charged me $120 to do the t-case last time I had them do it a few years ago. Doing it myself costs me two quarts of gear oil ($20 or so) and a new crush washer, and maybe 15 min of time. I can only image what doing all 4 would cost at once from a dealer.

 

Yeah, Jiffy Lube wanted to charge an astronomical amount for all fluids.

 

I had Oilstop do my front diff once because I was on the way to a trail and realized I hadn't done it in a while, wanted it done quick. They're a drive-thru oil change company like Jiffy Lube but worlds better as far as being competent goes, lol. Anyway, they charged me $60 to do the front diff, which is a lot better than what Toyota wanted just to do the t-case but it's still way more than what it would cost to do yourself.

 

Just called the mechanic. $400 total including all labor and fluids. front diff, rear diff, transfer case, manual tranny.

Ouch.

 

Yeah, that's highway robbery (well, considering the labor rate nowadays I guess its' about average). Buy a few gallon jugs of gear oil for maybe $100, a bag of crush washers for $10 or so through Amazon (dealer has them too but pricier)...maybe $120 in materials and a couple hours of driveway time and you save yourself a few hundred bucks.

 

I would stop at your local hardware store and pick you up a crescent wrench or find out what size the bolts are that hold on the skid plates and buy that size wrenches. Their all the samesize. The plugs for all your oils should be same as well. I think the transmission is bigger. Between that and a catch can you can get out of it for $50 if you already have all the oil. Also I’ve changed out my transfer case oil in Oreillys parking lot. They don’t mind

 

I have an aftermarket skid now but if I remember right, they're either 12mm or 14mm bolts on the skid plate.

The manual trans is a 24mm plug, in fact I think they all are except for the front diff which I think is a 10mm hex