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gearbox oil

958 Views 14 Replies 8 Participants Last post by  IowaSmart451, 
rponton
Hello all,
I am doing my reluctor rings, and since I have the back end all apart, I figure I'll do the drive shaft seals while I'm at it. Obviously, pulling the driveshaft means replacing the gearbox oil.

What do you all use that I can buy US side for oil?
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jwight
This may (or not) help: Gear Oil & smart :)
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D
Factory oil, you’ll need three bottles. Expensive.

Genuine Smart 001989510310 ATF, Automatic Transmission Fluid; Synthetic 75W-90 - Smart | 0019895103 BOT328

Find Genuine Smart ATF, Automatic Transmission Fluid; Synthetic 75W-90 001989510310 at discount prices in our extensive Smart auto parts catalog. AutohausAZ offers a large selection of Genuine Smart parts online. Fits Smart Fortwo. 0019895103 BOT328
www.autohausaz.com www.autohausaz.com
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smark
Liquid Bottle Bottle cap Fluid Plastic bottle
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rponton
So....
The link to the discussion. Wow.
Royal Purple?
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jetfuel
…my highly abused transmission gets Red Line MT90…

Jetfuel…pass on anything purple
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D
Here is one that is not approved of course, but is GL4 and a synthetic:

Ultra1Plus™ SAE 75W-90 Synthetic Gear Oil, API GL-4 https://a.co/d/dflAvjj
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smark
Clint Wong, our smart car service manager recommend Royal Purple gear oil to me.
Haven’t had any issue using that brand. Over 100K miles on the clock. Any good
gear oil is good.
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Rambo4
Valvoline SynPower 75w-90. You lose some inserting the bottle between the spring. The second bottle goes in easier if you squirt half of the bottle into the 1st one.
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D
Valvoline SynPower 75w-90 Is not good, it is GL5
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Rambo4
It sure did quiet the ride down and got rid of 55% of the "milkshaking" the Getrag transmission is notorious for.
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D
It’s not friendly for the synchronized transmissions.
Here is a direct quote from Valvoline:

“Recommended for conventional and limited slip differentials and non-synchronized manual transmissions where API GL-5 or API GL-4 fluid is specificed”
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IowaSmart451
Synthetic GL-4
www.amazon.com

Amazon.com: Ultra1Plus SAE 75W-90 Synthetic Gear Oil, API GL-4 (3 Pack QT) : Automotive

Buy Ultra1Plus SAE 75W-90 Synthetic Gear Oil, API GL-4 (3 Pack QT): Gear Oils - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
www.amazon.com
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M
Mobil 1 Delvac 50
90 weight gear oil

www.mobil.com

Mobil Delvac 1™ Transmission Fluid 50 | Mobil Delvac™ Transmission Fluids

Learn how Mobil Delvac 1™ Transmission Fluid 50, a full synthetic, manual transmission fluid, was designed to provide maximum engine protection.
www.mobil.com www.mobil.com
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IowaSmart451
mattwithcats said:
Mobil 1 Delvac 50
90 weight gear oil

www.mobil.com

Mobil Delvac 1™ Transmission Fluid 50 | Mobil Delvac™ Transmission Fluids

Learn how Mobil Delvac 1™ Transmission Fluid 50, a full synthetic, manual transmission fluid, was designed to provide maximum engine protection.
www.mobil.com www.mobil.com
Click to expand...
Why would you use a straight viscosity gear oil? SAE 50 is about the same as 90, but the 75w is equivalent to SAE 15 when cold.

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