--- product_id: 343633702 title: "Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (2 Pack)" brand: "red line" price: "AR$322690" currency: ARS in_stock: true reviews_count: 5 url: https://www.desertcart.com.ar/products/343633702-red-line-50304-mt-90-75w-90-gl-4-manual store_origin: AR region: Argentina --- # Up to 300°F heat resistance Optimized for manual transmissions 75W-90 GL-4 viscosity Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (2 Pack) **Brand:** red line **Price:** AR$322690 **Availability:** ✅ In Stock ## Summary > ⚙️ Shift smarter, not harder — the lubricant your manual transmission deserves! ## Quick Answers - **What is this?** Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (2 Pack) by red line - **How much does it cost?** AR$322690 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/343633702-red-line-50304-mt-90-75w-90-gl-4-manual) ## Best For - red line enthusiasts ## Why This Product - Trusted red line brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Cold-Start Performance:** Ensures excellent shifting even in low temperatures—no more sluggish starts - • **Universal Compatibility:** Meets GL-1, GL-3, and GL-4 specs for broad manual transmission and transaxle use - • **High-Temp Gear Protection:** Withstands temperatures up to 300°F to prevent gear wear and rattle - • **Precision Friction Control:** Perfect synchronizer coefficient of friction for effortless downshifts - • **Seamless Shifting Experience:** Eliminates notchy shifting for smooth gear changes every time ## Overview Red Line 50304 MT-90 is a premium 75W-90 GL-4 manual transmission lubricant designed to deliver smooth, precise shifting and robust gear protection. Engineered for manual transmissions and transaxles, it excels in high-temperature environments up to 300°F and ensures optimal synchronizer friction for effortless gear engagement. Trusted by enthusiasts and professionals alike, this 2-pack offers 64 fluid ounces of high-performance gear oil that eliminates gear noise and enhances transmission longevity. ## Description Red Line MT-90 Manual Transmission Lubricant A 75W90 GL-4 gear oil (SAE 10W/15W/40 engine oil viscosity) designed for use in manual transmissions and transaxles. Red Line MT-90 Manual Transmission Lubricant provides excellent protection of gears and synchronizers and its balanced slipperiness provides a perfect coefficient of friction, allowing easier shifting. Red Line MTL / MT-90 BENEFIT SUMMARY * Eliminates notchy shifting * Designed for manual transmissions and transaxles * Perfect synchronizer coefficient of friction * Enables high-speed downshifting * Excellent shifting even when cold * Eliminates gear whine and rattle at high temperatures * High-performance gear protection * Non-corrosive toward synchronizers * Satisfies manual transmissions and transaxles requiring motor oils or GL-1, GL-3, or GL-4 gear oils. ## Features - manufacturer: Red Line Oil - Item Trademark: RED LINE OIL - Item Weight: pounds, pounds, 1.99, 1.99 - Item Category: Machine Lubricant ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B00NT5V8RW | | Best Sellers Rank | #23,354 in Automotive (See Top 100 in Automotive) #374 in Automotive Oils | | Brand Name | Red Line | | Container Type | Bottle | | Customer Reviews | 4.9 4.9 out of 5 stars (603) 4.9 out of 5 stars | | Item Form | Oil | | Item Weight | 903 g | | Liquid Volume | 64 Fluid Ounces | | Manufacturer | Red Line | | Model Number | 50304 | | Number Of Items | 1 | | Number Of Packs | 2 | | 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 | | Unit Count | 64 Fluid Ounces | | Upc | 737534816592 | | Upper Temperature Rating | 300 Degrees Fahrenheit | | Viscosity | 75W90 | ## Product Details - **Brand:** Red Line - **Item weight:** 1.99 Pounds - **Liquid volume:** 64 Fluid Ounces - **Package information:** Bottle - **Recommended uses for product:** Gear Oil ## Images ![Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (2 Pack) - Image 1](https://m.media-amazon.com/images/I/719nvofbSzL.jpg) ## Questions & Answers **Q: Is anyone running this in an NV4500 long term? How does it hold up?** A: I've been running it for 35,000 miles in my 1996 model GM NV4500 without issue. **Q: Do I pour the entire contents directly in? Are there any special instructions?** A: 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. **Q: Is this product non-synthetic gl-3?** A: Synthetic gl -4 oil **Q: Can i use on 1992 chevy camaro rs?** A: 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 ## Customer Reviews ### ⭐⭐⭐⭐⭐ Scion grinding in 2nd or 3rd? This is what you need! *by on Reviewed in the United States 26 June 2026* Wow, I am shocked!So I've been dealing with my gears grinding in 2nd and 3rd for the past 1 1/2 Years in my manual 2005 Scion XA the car has had the problem since before i bought it, The previous owners replaced the clutch, And I'm assuming that someone had added extra gear oil, Because it spilled out when i took off the fill cap on ramps, I've been trying to figure out the grinding, For the past 2 years doing everything but trying to put a new clutch in, Previous owners also stated that the mechanic may have put the clutch in wrong, I guess he didn't, Because this nearly completely fixed the issue in under 200 miles of driving, Driving has also become much smoother, If you have a Scion XA i suggest changing to this oil regardless if your gears are grinding!You only need exactly 2 quarts for the Scion XA no more no less, I wish all m mechanics would look this up before adding too much oil!I found this out from reading forms on the Scion XA, Everyone suggested this oil for the grinding and regardless! So i hope someone sees it here! ### ⭐⭐⭐⭐⭐ It's worth the money. *by on Reviewed in the United States 16 October 2026* Replaced the fluid on a 99 Tacoma I just picked up. The shifting was notchy and you had to count to 4 before you could put it in 3rd gear. The old fluid looked 100% when I dropped it and my heart sank. I thought new fluid would not make a difference. I was wrong. The shifts were silky smooth and you could feel the difference right away. 3rd gear acted like it should and no more grinding. I'm not sure why Red Line is so much better, but if you are not using it...sucks to be you. ### ⭐⭐⭐⭐⭐ Seems to be a very good oem alternate *by on Reviewed in the United States 14 July 2026* My 2007 Corolla 5 speed always had a “notchy” first gear engagement when coming to a stop and this was immediately gone when switching to this fluid. Keep in mind when i drained my transmission the old fluid smelled like it was at the end of its life and i have no idea which fluid was in it before as I’ve only put about 15k miles on the car in over a year and a half. Overall I’m very happy with this fluid and it seemed to make shifting overall more smooth. Would recommend ## Frequently Bought Together - Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (2 Pack) - Red Line 57904 75W90 GL-5 Synthetic Gear Oil for Hypoid Limited Slip Differentials - 1 Quart - Slippery Pete - Fluid Pump for Standard Quart Bottles - 8cc per Pump Stroke and 3rd Hand Adapter, Transfer Gear Oil, Transmission and Differential Fluid (28mm) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.ar/products/343633702-red-line-50304-mt-90-75w-90-gl-4-manual](https://www.desertcart.com.ar/products/343633702-red-line-50304-mt-90-75w-90-gl-4-manual) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-11-02*