# Red Line 75W140NS Gear Oil - Gallon

Also used in clutch-type limited slip differentials in racing for maximum lock up-some users add Limited Slip Friction Modifier in small doses to customize slippage

-   Also used in clutch-type limited slip differentials in racing for maximum lock up-some users add Limited Slip Friction Modifier in small doses to customize slippage
-   Popular for historic and vintage transmissions, like Mid-1930s to early-1950s synchro-equipped gearboxes in cars and trucks
-   Contains extreme pressure additives like our 75W140 GL-5 oil, but lacks friction modifiers to balance slipperiness
-   Helps with noisy or rough shifting in troubled A-833 Dodge/Plymouth 4-speed transmissions from 1964 to 1969
-   Option for noisy transmissions when mixed with 75W90NS or MT-90 to bring viscosity level up
-   Non corrosive formula, safe for use with all synchro materials

## Details

- **Price:** 589.49 CAD
- **Vendor:** Red Line
- **Type:** Gear Oils

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 589.49 CAD | In stock |

## Images

- Photo - Primary
- User 1

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/red-line-75w140ns-gear-oil-gallon)
> Updated: 2026-08-15