I had dirty rear differential oil! - Page 3

**DEWFPO** · 06-01-2008, 12:07 PM

I have a small qt. hand pump now. Costs about $5-7 at most parts places.

Before that I used to use a long tube, stick it in the fill port and run the other end of the tube to the outside of the vehicle. I'd stick a funnel in the end of the tube and tie the top of the funnel to the side mirror with a string. Then I would pour in the required amount of lube by standing alongside the vehicle. After putting in the last bit, I'd climb back under the vehicle with my needle nosed pliers and wait for the overflow, then I'd pinch the tube and pull it out of whatever I was filling and stick it into one of the empty lube bottles to drain the remainder into. Gravity works great.

DEWFPO

SVTim · 06-01-2008, 08:08 PM

Quote:

Blown383 previously said:

Quick question....where is the drain plug for the transfer case? I tired looking at the FJ factory manuals and it doesn't show where its located.

-B

Find the transfer case. If you cannot find it, follow the rear drive shaft towards the front of the vehicle. It will end at the TC. Here, you will see 2 large bolts (these bolts will be facing the rear of the vehicle), 24mm or 15/16". I was able to get under the vehicle and drain/refill the TC when it was stock.

Remember, always remove the refill (top) bolt first.

Blown383 · 06-02-2008, 02:04 AM

Quote:

SVTim previously said:

Find the transfer case. If you cannot find it, follow the rear drive shaft towards the front of the vehicle. It will end at the TC. Here, you will see 2 large bolts (these bolts will be facing the rear of the vehicle), 24mm or 15/16". I was able to get under the vehicle and drain/refill the TC when it was stock.

Remember, always remove the refill (top) bolt first.

When I crawled underneath the car it was pretty obvious. LOL! So after after changing out the front & rear diff, and the transfer case I ended up using 5.5 quarts. Is that normal?

-B

SVTim · 06-02-2008, 06:34 AM

Quote:

Blown383 previously said:

When I crawled underneath the car it was pretty obvious. LOL! So after after changing out the front & rear diff, and the transfer case I ended up using 5.5 quarts. Is that normal?

-B

That sounds normal. I used nearly 6 full quarts, but I did allow everything to drain for an hour.

Peromyscus · 06-02-2008, 01:13 PM

Quote:

Blown383 previously said:

Quick question....where is the drain plug for the transfer case? I tired looking at the FJ factory manuals and it doesn't show where its located.

-B

Here is a link to a thread that will show a pic of the transfer case fill & drain plugs...

changing truck fluids...need help

**Crotalus** · 07-09-2008, 08:04 PM

I just changed my rear differential oil for the first time with Mobil 1 Synthetic 75W-90. The old oil was very dirty, slightly milky, with sludge and some metal fragments/shavings - YUCK! I've been in some water and at just under 20k miles, I was a bit nervous about how bad it would be - wish I would have changed it earlier, but it's done now. I will definitely be changing my diff fluid at least every 10k from now on and am also doing the scuba mod.

Thermal_Scorpion · 07-10-2008, 11:51 AM

I just had my diffs done yesterday. The fluid was dark greyto light black but not milky. No metal shavings on the magnets either.

What level of fluid darkness should cause alarm?

Thanks.

**spincycle** · 07-10-2008, 01:16 PM

Quote:

Thermal_Scorpion previously said:

I just had my diffs done yesterday. The fluid was dark greyto light black but not milky. No metal shavings on the magnets either.

What level of fluid darkness should cause alarm?

Thanks.

Ditto this. Mine was dark. Spoke to a tech who I trust who indicated no alarm about it, but noted the darkness in his writeup.

I feel like I wanna add some of my 1" diameter ultra-strong neodymium mags to the side of he diffs, see what happens.

bartt · 07-10-2008, 01:39 PM

Quote:

spincycle previously said:

Ditto this. Mine was dark. Spoke to a tech who I trust who indicated no alarm about it, but noted the darkness in his writeup.

I feel like I wanna add some of my 1" diameter ultra-strong neodymium mags to the side of he diffs, see what happens.

No need for that, the drain plugs are magnetized.

**DEWFPO** · 07-10-2008, 02:50 PM

Quote:

Thermal_Scorpion previously said:

I just had my diffs done yesterday. The fluid was dark greyto light black but not milky. No metal shavings on the magnets either.

What level of fluid darkness should cause alarm?

Thanks.

The color isn't really all that important. If it's dark, it typically means the fluid is doing it job by suspending the fine particles in it. What you are mainly looking for is material on the magnet, the 'feel' of the lube between your fingers and the consistency (as compared to fresh).

DEWFPO