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Redline Lightweight Shockproof Gear Oil quart bottle
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Redline Lightweight Shockproof Gear Oil Quart

No reviews yet SKU RL148-1 Red Line Oil

Redline Lightweight Shockproof Gear Oil is a high-protection, low-drag gear oil in an intermediate viscosity. It contains a suspension of solid microscopic particles that act as an extreme pressure agent. This works almost like a liquid.

$72 incl GST
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Fitting availableFitted in store at Gearhead Diffs, Sydenham
12 months or 20,000 kmOn parts we supply and fit
Fitment
SuitsRedline Lightweight Shockproof Gear Oil QuartBrandRed Line OilSKURL148-1

Not sure it suits your vehicle? Send us your rego and we will confirm before you order.

Warranty and delivery

All work and parts supplied by Gearhead Diffs are covered for 12 months or 20,000 km, whichever comes first, provided the vehicle is serviced to schedule, filled with the correct spec Red Line oil and not misused.

Shipped NZ wide by courier. Overnight to most South Island addresses, one to two days to the North Island, rural delivery can add a day. Freight is calculated at checkout, or free when it travels in the box with an exchange diff.

NZ delivery only. We do not ship this item overseas.

Full warranty, delivery and returns policy

Description

Redline Lightweight Shockproof Gear Oil (Quart)

Redline Lightweight Shockproof Gear Oil is a high-protection, low-drag gear oil in an intermediate viscosity. It contains a suspension of solid microscopic particles that act as an extreme pressure agent. This works almost like a liquid grease. The formula delivers film thickness greater than an SAE 75W140 gear oil. Yet its friction stays as low as an 80W gear oil or 30W motor oil. Because of this balance, it’s often described as a “best of both worlds” gear lubricant.

How Redline Lightweight Shockproof Gear Oil Protects

This oil cuts the coefficient of friction by 40% compared with conventional gear oils. At the same time, it carries 250% more load than a standard gear oil. That combination helps prevent gear tooth breakage and resists throw-off under hard use. It also has excellent low-temperature flow, so cold shifting stays smooth even before the drivetrain warms up. Together, these properties make it well suited to gearboxes that see frequent, hard shifts.

Applications and Handling Notes

Racers use this oil in differentials under moderate loads. It’s popular in racing transmissions such as Hewland and other road-racing dog-ring boxes. Bert and Brinn boxes for stock cars, and G-Force and Liberty clutchless boxes for drag racing, also run it well. It suits wet sump transmissions and differentials with splash lubrication. If you run it with a pump or cooler, use an inline screen rather than a fine filter. Avoid pumping it down the center of a mainshaft, since that can cause the particles to centrifuge out of solution.

This Quart size suits a single gearbox or differential fill. A Gallon size is also available for larger jobs or multiple fills. Not sure if Lightweight Shockproof suits your setup? Get in touch and we’ll help you choose. For the full technical data sheet, see Redline’s official product page.

Reviews

No reviews on this product yet. Bought one? We would like to hear how it went. Write a review Bought this? You'll get a review link by email three weeks after it ships. Only customers who have bought the product can review it.
Example reviews These three are examples to show the layout. Real reviews from verified buyers replace them as they come in.
★★★★★ Exactly as described
Sarah M · Dunedin · Example review

Price was the price, no surprises. Return pickup was already booked which made life easy.

★★★★★ We fit these for customers every month
Workshop customer · Christchurch · Example review

Order before 2pm, on the bench next morning. Preload sorted so we do not see them back. Saves us a hoist for a week every time.

★★★★★ Sorted the clunk
Dave P · Nelson · Example review

Rang the team first to check it was the right one for my rego. It was. Fitted by my local mechanic, no more clunk on take off.

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