Is anyone running this in an NV4500 long term? How does it hold up?

I've been running it for 35,000 miles in my 1996 model GM NV4500 without issue.

Do I pour the entire contents directly in? Are there any special instructions?

To get maximum benefit of the Red Line you need to replace all the oil in the transmission. For my car, it took 3.4 quarts so I bought four and filled it up until fluid was level with the bottom of the fill plug. If you go to the Red Line website, they have which transmission oil is correct for your car and the capacity of the transmission so you will know how much you will need.

Can i use on 1992 chevy camaro rs?

I would not. It is supposed to be OEM recommended for my 98 vw Cabrio 5speed. So Put $46 worth in and at0°F I could not shift the car until 30 minutes of idling. second Synchromesh was very fussy at 20deg

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Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (2 Pack)

Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (2 Pack)

Product ID: 19688723

Details

Brand
Red Line
Item Weight
2 pounds
Liquid Volume
64 fluid
Package Information
Bottle
Recommended Uses For Product
Gear Oil

⏱️Friction formula for quicker, smoother shifts

⚙️75W-90 viscosity for optimal gear protection

🛡️GL-4 safe, protects brass synchros from damage

$144.79

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Description

⚙️ Shift into the fast lane of gear protection and performance!

TRUSTED LEGACY - Red Line’s proven expertise since 1979 means no compromises on performance or protection.
VALUE PACKED DUO - Two 1-quart bottles ensure you’re always ready for smooth, reliable transmission care.
UNMATCHED GEAR DEFENSE - High-performance formula extends synchro life and shields gears under pressure.
VERSATILE COMPATIBILITY - Ideal for GL-1, GL-3, and GL-4 applications, plus safe for brass synchros—no corrosive sulfurs here.
SEAMLESS SHIFTING EXPERIENCE - Perfect synchronizer friction coefficient eliminates notchy shifts, even in cold starts.

Red Line 50304 MT-90 is a premium 75W-90 GL-4 manual transmission and transaxle lubricant designed to deliver superior gear protection and extend synchronizer life. Its advanced friction formula ensures quicker, smoother shifts even in cold conditions, while being safe for brass synchros by avoiding harmful reactive sulfurs. Trusted since 1979, this 2-pack offers professional-grade performance for GL-1, GL-3, and GL-4 applications, making it the go-to choice for enthusiasts and professionals seeking reliable transmission care.

Specifications

ASIN	B00NT5V8RW
Best Sellers Rank	#1,432 in Automotive ( See Top 100 in Automotive ) #4 in Gear Oils
Brand Name	Red Line
Compatible Material	Brass
Container Type	Bottle
Customer Reviews	4.9 4.9 out of 5 stars (5,102)
Item Form	Oil
Item Weight	2 pounds
Liquid Volume	64 fluid ounces
Manufacturer	Red Line
Model Number	50304
Number of Items	2
Number of Packs	2
Part Number	50304
Recommended Uses For Product	Gear Oil
SAE J300 Viscosity Grade	75W-90
UPC	737534816592
Unit Count	64 Fluid Ounces
Viscosity	75W90

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$144.79

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

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