Can I use this for my 2011 Mazdaspeed 3? (Manual transmission)

It's in my 2014 CX-5 which requires 75W-80. Works better than Mazda MTF.

What kind of improvement will I see using this over factory in an mt82 in a mustang?

Not much, it runs a tad smoother when at temp but the notorious 3rd gear issue is still present, I noticed 5th would also scratch when it got really really cold. I'm thinking about switching to ATF like most others have in accordance with Ford's specs.

I have a bmw 89 325IS and i need 80w gl-4 which one is the one i need to get?

If you have a manual transmission then you are looking at the correct one which is part number 50204

Is this safe to use in my 1980 Mercedes Benz 240D?

Did a search on Pelican Parts for your 240D and it recommends this fluid for your manual transmission.

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Red Line 50204 SAE 75W80 API GL-4 Manual Transmission and Transaxle Lubricant (MTL) Car Gear Oil - 1 Quart

Red Line 50204 SAE 75W80 API GL-4 Manual Transmission and Transaxle Lubricant (MTL) Car Gear Oil - 1 Quart

Product ID: 2018135

Details

Brand
Red Line
Item Weight
1.7 Pounds
Liquid Volume
32 Fluid
Material
Synthetic
Package Information
Bottle

🔥High flash point 232°C for thermal stability

🚗Compatible with premium manual transmissions

⚙️75W80 viscosity for optimal gear protection

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Description

⚙️ Shift smarter, not harder — the gear oil your manual transmission deserves!

SYNCHRO SAVIOR - Safe for brass synchros—extends synchro life by avoiding corrosive sulfurs found in GL-5 oils.
PROVEN LONGEVITY - High-performance synthetic base ensures superior wear protection and longer transmission life.
DIY FRIENDLY UPGRADE - Easy to install with clear guidance—upgrade your manual transmission fluid and feel the difference on every shift.
TRUSTED COMPATIBILITY - Recommended for GL-1, GL-3, GL-4 specs and top brands like BMW, Honda, Mini Cooper, and Land Rover.
PRECISION SHIFT PERFORMANCE - Balanced friction formula delivers quicker, smoother gear changes without the slip.

Red Line 50204 SAE 75W80 API GL-4 Manual Transmission Lubricant is a premium synthetic gear oil engineered for high-performance manual transmissions. It offers balanced friction for quicker shifts, protects brass synchros by excluding harmful sulfurs, and meets GL-1, GL-3, and GL-4 specifications. Trusted by enthusiasts and compatible with brands like BMW, Honda, and Land Rover, this 1-quart bottle delivers superior thermal stability and wear protection, making it a cost-effective upgrade for smoother, longer-lasting gear operation.

Specifications

ASIN	B000CPCBEG
Best Sellers Rank	#11,603 in Automotive ( See Top 100 in Automotive ) #84 in Transmission Fluids
Brand Name	Red Line
Container Type	Bottle
Customer Reviews	4.8 4.8 out of 5 stars (1,741)
Flash Point	232 Degrees Celsius
Global Trade Identification Number	00083522502047
Included Components	Auto part, Automotive Accessories, Replacement and Performance parts
Item Form	Liquid
Item Type Name	Car Gear Oil - 1 Quart Bottle
Item Weight	1.7 Pounds
Liquid Volume	32 Fluid Ounces
Manufacturer	Red Line
Material	Synthetic
Model Number	(50204)
Number of Items	1
Part Number	50204
Recommended Uses For Product	auto racing
Specific Uses For Product	Specific vehicle transmissions (e.g. BMW, Honda/Acura, Ford Focus, Land Rover/Range Rover LT77S, Mitsubishi, Dodge & Jeep NV1500, NV3500, NV3550 & NV5600 truck transmissions)
UPC	083522502047
Unit Count	32.0 Fluid Ounces
Upper Temperature Rating	1 Kelvin
Viscosity	185
Warranty Description	Manufacturer Warranty

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AR$108338

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In stock

Sold byAmazon ArgentinaDelivered 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 Argentina.

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