Red Line 75W140 GL-5 Gear Oil
Product Description
Red Line 75W140 GL-5 Gear Oil is a fully synthetic gear oil designed for high-load differential applications in performance road cars and racing vehicles. Supplied in a 946ml / 1 US Quart bottle, it contains the extreme pressure additives required for strong protection under demanding conditions.
Formulated using polyol ester base stocks, Red Line 75W140 provides excellent lubrication, shear stability and oxidation resistance compared with conventional gear oils. Its high viscosity index helps maintain consistent viscosity and film thickness as temperatures change, supporting reliable protection during hard use.
This oil includes friction modifiers for clutch-type limited slip differentials, helping the LSD operate correctly without the need for additional friction modifier in most applications. It is engineered to reduce sliding friction in hypoid gears, helping lower operating temperatures and improve differential efficiency.
Red Line 75W140 is recommended for applications requiring API GL-5, GL-6, MT-1, MIL-L-2105E and SAE J2360 specifications. It is not designed for most manual transmissions or transaxles, as the extreme slipperiness may cause synchroniser mesh issues and shifting problems.
Please confirm the correct oil grade, specification and capacity for your vehicle before ordering.
Further information below.
Key Features
Vehicle Compatibility
What's Included
FAQs
Shipping & Delivery
Dispatch Times
Most stocked items dispatch within 1–2 business days. Some products may have longer lead times due to special ordering, availability, or build times. If your order contains multiple items, they may be shipped together once all items are ready unless otherwise agreed.
UK & International Shipping
We ship worldwide. Transit times vary depending on destination and courier. Tracking details are provided once your order is dispatched.
Import Duties & International Orders
International customers are responsible for all import duties, taxes, and clearance fees. These are not included in our prices and are outside of our control. Refusal or non-payment of import charges may result in return shipping, handling fees, and customs charges being deducted from any refund.
Damaged Shipments
If your parcel arrives visibly damaged, please refuse delivery or note the damage with the courier. If damage is discovered after opening, contact us immediately with photos. Do not install damaged items, as installation voids courier claims and return eligibility.
Returns
Returns must be authorised before sending anything back. Returns must be requested within 14 days of delivery and returned within 14 days of approval, in unused/uninstalled condition and in original packaging. Some items, including special-order, built-to-order, used, installed, or modified parts, are non-returnable.
Full details are available in our Shipping Policy and Returns & Refund Policy.
Warranty & Disclaimer
Warranty
Most products include a manufacturer’s warranty covering manufacturing defects only. Warranties do not cover wear and tear, improper installation, misuse or neglect, track use, competition or racing environments, labour costs, vehicle damage, downtime, or consequential loss. Warranty outcomes are determined by the manufacturer, not Clubsport Garage. Items must be returned for inspection at the customer’s cost unless agreed otherwise.
Fitment & Installation
Many products are aftermarket components and may require professional installation or minor adjustment. Perfect OEM-level fitment cannot be guaranteed. Professional installation by an experienced workshop is strongly recommended. Installed or used items cannot be returned.
Motorsport Use Disclaimer
Some products are intended for off-road, track, or motorsport use only and may not be legal for road use, for example non-TÜV/DOT-approved parts. It is the customer’s responsibility to ensure compliance with local laws, insurance requirements, and vehicle regulations. By purchasing and installing aftermarket parts, you accept all responsibility for ensuring compatibility, legal compliance, proper installation, and any resulting wear, damage, or failure.
Product Images & Descriptions
Product photos are illustrative and may differ slightly from the item supplied. If specific details are important, please contact us before purchasing.
Full details are available in our Terms of Service and related policy pages.
