Why does gear oil stink?

"Rusty Vandura - www.tinyurl.com/keepoppo" (rustyvandura) 07/10/2017 at 18:38 • Filed to: None

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MM54 > Rusty Vandura - www.tinyurl.com/keepoppo 07/10/2017 at 18:41

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Synthetic doesn’t stink nearly as bad - that’s grounds for me to use it wherever possible.

Daily Drives a Dragon - One Last Lap > Rusty Vandura - www.tinyurl.com/keepoppo 07/10/2017 at 18:43

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Doesn’t it have more sulfur for wear purposes

EL_ULY > Rusty Vandura - www.tinyurl.com/keepoppo 07/10/2017 at 18:48

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Especially when you have to do all 3 diffs on a Toyota LC Lexus LX that is super hot and the customer is waiting. Worst smell

Berang > Rusty Vandura - www.tinyurl.com/keepoppo 07/10/2017 at 18:48

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That’s what oil smells like. You ever drive through an oil town? That’s what half of Texas smells like.

Demon-Xanth knows how to operate a street. > Rusty Vandura - www.tinyurl.com/keepoppo 07/10/2017 at 18:53

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This gear oil has a new grape scent!

https://www.amazon.com/ACDelco-10-4016-75W-90-Synthetic-Axle/dp/B000QGOX1A

I am seriously not making this shit up.

crowmolly > Rusty Vandura - www.tinyurl.com/keepoppo 07/10/2017 at 19:00

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High sulfur content for anti-wear.

Urambo Tauro > Demon-Xanth knows how to operate a street. 07/10/2017 at 19:02

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This stuff’s still fake, though... I think. For now, anyway.

jimz > Rusty Vandura - www.tinyurl.com/keepoppo 07/10/2017 at 19:09

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gear oil- especially that meant for hypoid gears like in a differential- can experience a tremendous amount of shear; the oil is squeezed between two surfaces sliding across each other with an enormous amount of force. the anti-shear extreme pressure (EP) additives contain a ton of sulfur, which gives it its characteristic stink.

jimz > Berang 07/10/2017 at 19:10

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while crude oil does have sulfur in it, it’s not why gear oil stinks. even full synthetic gear oil smells; it’s because the extreme-pressure (EP) shear-stabilizing additives contain sulfur.

McMike > Rusty Vandura - www.tinyurl.com/keepoppo 07/10/2017 at 19:15

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I changed motorcycle fork oil at 40K miles, and I thought I was going to throw up.

Berang > jimz 07/10/2017 at 19:18

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Smells the same to me.

for Michigan > Rusty Vandura - www.tinyurl.com/keepoppo 07/10/2017 at 19:52

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I like the smell of gasoline and motor oil. Brake fluid and gear oil are nasty though.

Demon-Xanth knows how to operate a street. > Urambo Tauro 07/10/2017 at 20:36

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If they made seasonal scent motor oil, people would actually get it changed.

Rusty Vandura - www.tinyurl.com/keepoppo > MM54 07/10/2017 at 21:03

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Just used some, and it was pretty stinky.

Rusty Vandura - www.tinyurl.com/keepoppo > Daily Drives a Dragon - One Last Lap 07/10/2017 at 21:03

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I’m sure that I do not know...

Rusty Vandura - www.tinyurl.com/keepoppo > EL_ULY 07/10/2017 at 21:04

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Rusty Vandura - www.tinyurl.com/keepoppo > jimz 07/10/2017 at 21:04

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So the icky gear lube smell is primarily sulfur?

Rusty Vandura - www.tinyurl.com/keepoppo > Demon-Xanth knows how to operate a street. 07/10/2017 at 21:05

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Damn! That’s what I would have used!

Rusty Vandura - www.tinyurl.com/keepoppo > crowmolly 07/10/2017 at 21:06

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I never would have pegged that as sulfur. Just stinky.

Rusty Vandura - www.tinyurl.com/keepoppo > jimz 07/10/2017 at 21:06

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I lurnt some pin today. Thank you for the explanation!

Rusty Vandura - www.tinyurl.com/keepoppo > for Michigan 07/10/2017 at 21:08

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When I was a kid, I liked the smell of gasoline. Then in the Army, I became a fuel handler, and wound up disliking the smell of gas and liking the smell of diesel. Kind of sweet smelling...

E92M3 > Rusty Vandura - www.tinyurl.com/keepoppo 07/10/2017 at 21:31

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It’s pretty stanky. Even after you wash your hands the smell lingers for 2 days.

Frank Grimes > Rusty Vandura - www.tinyurl.com/keepoppo 07/10/2017 at 21:37

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I hate the smell of that stuff its one of those stinks it feels like it gets into the back of my brain.

Rusty Vandura - www.tinyurl.com/keepoppo > Frank Grimes 07/10/2017 at 22:41

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Yeah. Mrs. O.C. is complaining about it and the smell on my clothes, which she insisted I remove and leave in the washing machine in the garage.

Scary__goongala! > Rusty Vandura - www.tinyurl.com/keepoppo 07/10/2017 at 23:03

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First time I ever smelled used gear oil was when I changed the diff oil in my NA for the first time. Stuff was grey and nasty smelling.

CaptDale - is secretly British > Rusty Vandura - www.tinyurl.com/keepoppo 07/11/2017 at 13:04

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GM’s synth is the worst. They added fake grape scent to it to make it better, but it is worse. Fake grape and gear oil smell mixed together *puke*

thejustache > Rusty Vandura - www.tinyurl.com/keepoppo 07/11/2017 at 15:38

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I had almost the opposite reaction... I came in smelling like gear oil the other day and my wife told me the smell reminded her of her dad who worked as a machinist for GM for years. I couldn’t wait to change out of the smelly clothes but she actually like it!

Rusty Vandura - www.tinyurl.com/keepoppo > CaptDale - is secretly British 07/11/2017 at 17:22

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As long as you don’t drink it, it’ll be okay.

Rusty Vandura - www.tinyurl.com/keepoppo > thejustache 07/11/2017 at 17:23

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That’s a nice story.

CaptDale - is secretly British > Rusty Vandura - www.tinyurl.com/keepoppo 07/11/2017 at 17:24

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But it mixes so well with vodka

Rusty Vandura - www.tinyurl.com/keepoppo > CaptDale - is secretly British 07/11/2017 at 17:48

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Maybe try some of this on the differential?