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 Oil (50304) MT-90 75W-90 GL-4 Manual Transmission and Trans axle Lubricant - 1 Quart

Red Line Oil (50304) MT-90 75W-90 GL-4 Manual Transmission and Trans axle Lubricant - 1 Quart

Product ID: 180466380

Details

Brand
Red Line
Item Weight
771 g
Liquid Volume
32 Fluid
Package Information
Bottle
Recommended Uses For Product
Manual

⚙️75W-90 viscosity for optimal gear protection

🛡️GL-4 formula safe for brass synchros

🇺🇸Proudly made in the USA

€ 134.12

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Shift into the fast lane with Red Line’s precision power!

HIGHLY RATED BY PROS - 4.9-star rating from over 2,700 users—join the elite drivers who trust Red Line.
SYNCHRO SAFE FORMULA - GL-4 rating means no reactive sulfides—perfectly safe for delicate brass synchros.
UNIVERSAL COMPATIBILITY - Ideal for manual transmissions and transaxles, covering all your drivetrain needs.
PRECISION GEAR PROTECTION - Advanced 75W-90 viscosity ensures smooth, reliable manual transmission performance.
TRUSTED AMERICAN CRAFTSMANSHIP - Manufactured in the USA with rigorous quality standards for peace of mind.

Red Line Oil MT-90 75W-90 GL-4 is a premium manual transmission and transaxle lubricant designed to protect brass synchros by eliminating harmful reactive sulfides. Made in the USA, this 1-quart bottle delivers optimal viscosity and durability, trusted by thousands of professionals for superior drivetrain performance.

Specifications

ASIN	B000CPCBEQ
Brand Name	Red Line
Compatible Material	brass
Container Type	Bottle
Country of Origin	USA
Customer Reviews	4.9 4.9 out of 5 stars (2,706)
Global Trade Identification Number	00083522503044
Included Components	MT90 75W90 GL4 QT
Item Form	Oil
Item Type Name	ACCESSORIES
Item Weight	771 g
Liquid Volume	32 Fluid Ounces
Manufacturer	Redline
Model Number	50304
Number of Items	1
Number of Packs	1
Part Number	50304
Recommended Uses For Product	Manual transmissions, Transaxles
SAE J300 Viscosity Grade	75W-90
UPC	083522503044
Unit Count	32.0 Fluid Ounces
Viscosity	75W-90

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