What Happens Exactly With No Differential Oil

Cheesy hahaha

 

OMFG! I guess the guy in the vid had severely impaired hearing? Either that, or he let his GF drive, lol ;-) Thanks for the link, Mr. Albertos delivery driver.

To Porno with a 4th X, I had no idea there was a front differential (and yes, it's an 08' Sport). I was under the impression there may be a transfer case, but I never messed with it (very low miles logged). But the rear diff. was changed to M1

$29 75w-90 Synthetic Gear Lube - 1 Quart (Pack of 2)

75w-90 LS, at about 7,000 miles on the odometer.

To the very wealthy guy, I take it they call you Max? Thanks for the clarity, but it seems to me that extensive damage should never occur, for anyone conscientious (I think the word someone used?), at least.

To the guy who apparently treats medical conditions (the TX?) with tacos (the food?), you said the "LS" in M1 is NOT suitable for LSD's? That's precisely what I put in at 6-7k mi, but I'm utterly ignorant at detecting any problems. Likewise, I've used Amsoil Severe Gear 75w-90, in non Tacomas, but rather, in 2 RWD sedans. Neither logged many miles yet (maybe 15k or so), so I can't really attest to anything, besides the fact that at least 1 sedan (mine) SEEMED fine for about 35k mi (i.e. I ran RP Synchromesh from 25k to 60k (the current mileage), and never noticed anything that worried me, just the symptoms that everyone at the table brings up, so I look to obviously have a monster, LOL. Poker is $hit, because it assures that I will go home with an empty wallet. C'est la vie. Boohoo...

 

The other function of diff oil is to act as a heat sink. The hypoid gears used in 90-deg differentials cause about 11-13% frictional loss. So if your truck is using 100 hp to move along, then 11-13 hp (9000 W) worth of heat needs to be dissipated through the oil. No oil - gear teeth overheat, soften, then break.

 

It may just be me, but why does it seem weird that someone would set up a video camera under their truck, then proceed to intentionally grenade their differential (or transmission, it's hard to tell what is being destroyed)??

 

Cause there

 

Thanks for bringing a good point, something I've contemplated plenty before. In other words, I arrived at the conclusion that just about every oil in modern cars supports that hypothesis, no? Wait, nevermind, please ignore my idiotic posts. I'm happy with merely knowing that the water in our engine cooling system dissipates heat, so long as the water pump is working, lol. Beyond that, my brain will surely explode. As such, dozens of people will know you're guilty of murder. ;-)

 

Just hearing that makes my asshole pucker

 

Yes. Coolant cools the outside of cylinders (hence water jacket). Engine oil cools the inside of pistons. The older 993-era Porsche 911s weren't really air-cooled; they were oil-cooled.

 

This is incorrect.

The wheel bearings are sealed from the axle tube and gear oil and run in grease.

These axles do not use a c-clip to retain the shaft. The only way the wheel will fall off is if that shaft fails AT the bearing. Or the bearing fails catastrophically.

 

I won't say all (of the ones marked LSD compatible) but I know that M1 and Valvoline both include friction modifier. You may need more, and it should be real apparent if you do. YMMV.

 

Heh, if you mean me, I do wonder how you concluded I was very wealthy, hah! Must be my support for guns, liquor, and whores, huh? I wish I were but I'm not. Regardless, yes, I agree for anyone who pays attention you should never have this problem. Sadly some don't!

 

My dad was a mechanic and one of his tools was a 4 inch or so long magnet...once the oil is drained swirl the magnet around the bottom of the pan. Check for debris.

 

Janster only said it was a friend with a old pickup. She didn't mention if it was a Toyota, or perhaps a Chevy, that does have a c-clip system in the rear diff. I was going by the belief that she was talking about the latter myself. Perhaps I am wrong. Not sure until she comes back.

 

The first thing that will happen you'll burn up the ring and pinion and it will howl like a cat. If you have a diff that acts fine and you find bits of metal you can do two things, panic or forget it they all have little bits of metal in them particularly on the first drain.

 

It was an old Ford. So, in that situation...yes, he had a C clip and the oil lubricates the bearings.

I had always assumed that gear oil lubricates the bearings - but perhaps that's old school based on the rigs I've worked on. I didn't realize toyota used sealed bearings. Learn something new everyday!!

 

I have been behind an F250 on the highway and saw what I thought was
water dripping down the back. They took the same exit I was taking and
when off ramp at a light, saw clearer that the pumpkin had just grenaded
and was pissing oil on the pavement. bro-tato kept driving along and I
got alongside at the next light, and motion to roll down window and I said
'did ja know your rear end was blown ?' ...got an 'Eh ?' and they drove off

it sounded like a brick in a washing machine...I didn't hang out but i bet
they got maybe one mile further before they were forced to use 4wd as FWD.

it literally was pissing fluid on the road for a good 2 miles

 

Which is fine but I didn't want anyone to confuse your anecdote for something that might happen in their Tacoma.

That is a bit "old school" and something you don't see too often anymore.

 

Today's Chevrolet 1/2 ton truck axles still use c-clip axle shafts, and their axle bearings are lubricated by the differential oil. So it is still pretty common. Not my favorite axle system for durability and strength, but they sure are easy as heck to work on!

 

They were probably convinced you were Charlie Sheen.

 

Yeah bearing goes bad you get to replace the axle too while it's all apart.