Proper gear oil

I need to add differential gear oil to my 02Tacoma V6 4wd 3.4 2door X-cab 4.1.1 ratio and I’m not sure which one to buy. Please advise me!
Thank you,
Harleychic

 

Any good GL5 75w90. Personally I use Valvoline in the little baggies. Makes filling up very easy.

 

Hey! Thank you! I appreciate your help

 

HC,
East Coast Gear Supply (ECGS) is one of, if not the best differential builder in the US. The owner's very educated opinion on gear oils is worth reading: ECGS Gear Oil Recommendation (eastcoastgearsupply.com) If you have not changed your gear oil recently, this would be a good opportunity.

 

• Temp Reference Chart – oil change frequency
o 170 Deg - 100,000 Miles
o 200 Deg - 50,000 Miles
o 220 Deg - 25,000 Miles
o 240 Deg - 12,000 Miles
o 260 Deg - 5,000 Miles
o 260-300 Deg – 500-1000 Miles until Temp is controlled

stop on the side of the road or rest area during or after long journey
pop the fill plug
stick in a thermometer?
take the differential temperature

ECGS Gear Oil Recommendation (eastcoastgearsupply.com)

 

Leid…thank you for your response and suggestion. I certainly will check it out! I hv2 replace my passenger rear seal as it is leaking. I probably will or should replace both seals. Thought I’d add some oil to bide a little time before I can get it fixed before I totally lose my back brakes and cause more problems…

 

Black97v6MT,
Thanks for your informative information! Interesting! Thank you!

 

When you say “add” gear oil? You should drain it and replace all new gear oil.

 

i would definitely like to know what temps that rear diff is running under certain conditions
might have to change it MORE frequently than the normal interval suggestions are

 

75W90 for standard usage
85W140 if you do a lot of towing/rock crawling

any brand is fine the differentials aren't picky

 

So I just purchased 3 quarts of this oil and I’ll make sure to drain it first before adding it. I never changed or added gear oil before so I’ll have to utube it lol
Thanks for everyone’s help and advice

 

MAKE SURE that fill plug comes out FIRST before EVER touching drain plug

 

This is what I just purchased which I could cancel and repurchase if I picked the wrong one. I haul things with my truck but mostly just drive 55 miles to work and back. I have 167,000 miles on my truck. Hopefully this

$116 Lucas Oil 10042 Set of 12 Heavy Duty 85W-140 Gear Oil 1 Quart

Lucas Oil 10042 Heavy Duty High Performance SAE 85W-140 Gear Oil - 3 Quarts

 

that will be just fine

 

Very good choice. That Lucas 85W-140 dino gear oil is the ECGS recommended gear oil that I have been running in my front diff./rear diff./R100 Tcase. It is very inexpensive and widely available. Summit Racing sells 1 gal jugs for a very low price with free shipping over $110 or so. I ran the expensive synthetics for over a decade but switched to the Lucas dino gear oil after reading ECGS's opinion. The only real difference I have noticed is that my wallet has stayed a good bit thicker.

 

Down here in the Houston area, the performance dif re-builder guru's at Pyle Bros says dino oil only for diff's is the only way to go.

 

I lived in Kingwood TX for 16 years while working for CAL then UAL and did rescue/recovery with my '97 V6 Taco 4x4 after the flooding from Hurricane Harvey. The Taco loaded with gas, Stihl chainsaws, logging chains, and a Glock & M4 truck gun to deal with the POS thieves all came in quite handy. A week or so later, I developed typhus for my trouble. Almost lost my 20/20 eyesight. The Kingwood NAPA store carried Amsoil gear oil which was pretty good stuff. But you dreaded changing all the gear oils not just because of the labor involved but because of the expense. I can't tell a bit of difference using Lucas dino gear oil and it does not cost a small fortune.

 

I am thinking that the change frequency needs to be dialed down on my rig to 12k miles
It was a bit on the watery last time I drained it in october and put some Valvoline 75w90 in there
Too many consistent highway miles heated it up too much?
I wish to not have any differential gear issues ever!

...Was going to buy amsoil severe but now the Lucas has me all intrigued
And is it safe to actually put 140 in there during the summer months?

 

Amsoil Severe was some very good stuff. I still have some to use up. But Lucas 85W-140 dino gear oil is what the diff. experts are telling us to run. Just change it more frequently, which is no problem here as I must change all the gear oils out at least once a year to keep water contamination at bay. Even with all the breathers well extended, moisture will exploit any opportunity to get in.