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

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

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

⏱️Faster, smoother shifts even in cold temps

⚙️75W-90 viscosity for optimal gear protection

🛡️GL-4 safe formula protects brass synchros

23168 som

Duties & taxes included

In stock

Sold byAmazon KyrgyzstanDelivered 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 Kyrgyzstan.

Secure transaction

Description

⚙️ Shift smoother, last longer — the gear oil pros swear by!

TRUSTED LEGACY - Red Line’s proven excellence since 1979 ensures top-tier performance and protection.
BRASS SYNCHRO SAFE - No reactive sulfurs means zero damage to sensitive brass synchros—engineered for longevity.
UNMATCHED GEAR DEFENSE - High-performance formula extends synchro and gear life for worry-free drives.
VERSATILE COMPATIBILITY - Meets GL-1, GL-3, and GL-4 specs—ideal for a wide range of manual transmissions.
SEAMLESS SHIFTING EXPERIENCE - Perfect synchronizer friction coefficient eliminates notchy shifts, even when cold.

Red Line 50304 MT-90 is a premium 75W-90 GL-4 manual transmission lubricant designed to protect gears and extend synchro life. Its advanced formula ensures quicker, notch-free shifts even in cold conditions, while being safe for brass synchros by excluding harmful reactive sulfurs. Trusted since 1979, this 2-pack quart set is a top choice for professional-grade manual transmission maintenance.

Specifications

ASIN	B00NT5V8RW
Best Sellers Rank	#2,185 in Automotive ( See Top 100 in Automotive ) #6 in Gear Oils
Brand Name	Red Line
Compatible Material	Brass Synchros
Container Type	Bottle
Customer Reviews	4.9 4.9 out of 5 stars (5,073)
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

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

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

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

23168 som

Duties & taxes included

In stock

Sold byAmazon KyrgyzstanDelivered 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 Kyrgyzstan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

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

3 weeks ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

View all Trustpilot reviews