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
1.99 Pounds
Liquid Volume
64 Fluid
Material
Oil
Package Information
Bottle

⏱️Faster, smoother shifts even in cold conditions

⚙️75W-90 viscosity for optimal gear protection

🛡️GL-4 safe formula protects brass synchros

415.17 DT

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚙️ Shift Like a Pro, Protect Like a Boss!

SYNCHRO SAFE FORMULA - Formulated without reactive sulfurs, it’s safe for brass synchros, preventing costly transmission damage common with GL-5 oils.
TRUSTED INDUSTRY LEADER - Backed by Red Line’s legacy since 1979, guaranteeing uncompromised performance and reliability for your manual transmission.
VERSATILE COMPATIBILITY - Ideal for GL-1, GL-3, and GL-4 applications, making it the go-to gear oil for a wide range of manual transmissions and transaxles.
PRECISION GEAR PROTECTION - Advanced 75W-90 viscosity ensures maximum durability and longer synchro life under all driving conditions.
SEAMLESS SHIFTING EXPERIENCE - Eliminates notchy shifts with a perfect synchronizer friction coefficient, delivering buttery smooth gear changes every time.

Red Line 50304 MT-90 is a premium 75W-90 GL-4 manual transmission and transaxle lubricant designed to extend synchro life and ensure smooth, quick shifts. Its unique formula protects brass synchros by eliminating harmful reactive sulfurs found in other gear oils. Trusted since 1979, this 2-pack quart set is perfect for GL-1, GL-3, and GL-4 applications, delivering top-tier performance and reliability for discerning drivers.

Specifications

ASIN	B00NT5V8RW
Best Sellers Rank	#1,988 in Automotive ( See Top 100 in Automotive ) #5 in Gear Oils
Brand	Red Line
Brand Name	Red Line
Container Type	Bottle
Customer Reviews	4.9 out of 5 stars 5,044 Reviews
Item Form	Oil
Item Weight	1.99 Pounds
Liquid Volume	64 Fluid Ounces
Manufacturer	Red Line
Material	Oil
Model Number	50304
Number of Items	2
Package Information	Bottle
Part Number	50304
Recommended Uses For Product	Gear Oil
SAE J300 Viscosity Grade	75W-90
Specific Uses For Product	Manual transmissions and transaxles, GL-1, GL-3, and GL-4 applications
UPC	737534816592
Unit Count	64 Fluid Ounces
Viscosity	75W90

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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415.17 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

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

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

View all Trustpilot reviews