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Red Line LightWeight ShockProof Gear Oil 1QT - Universal
Red Line LightWeight ShockProof Gear Oil 1QT - Universal

Red Line LightWeight ShockProof Gear Oil 1QT


Read 9 Reviews | 5 Q&As
Part # 58404

In stock!
Ships within 24 hours
Universal part

Features & Product Details

RallySport Direct is proud to bring you some of the best lubricants in the industry brought to you by Redline. 

This is the Redline Lightweight ShockProof Gear Oil. This gear oil has been designed to offer the most protection in your transmission by having potent viscosity characteristics that provide a greater film thickness that is also light which gives you a great balance of low drag, and superior protection. The Lightweight ShockProof can handle racing transmissions, as well as transaxles that see continuous loads, and has n excellent low-temperature. flow which allows easier shifting in colder temperatures.



  • Film thickness greater than an SAE 75W 140, yet low fluid friction like 80W gear oil or 30W motor oil
  • Excellent low-temp flow for improved cold shifting 
  • For racing differentials under moderate loads
  • Popular in racing transmissions like Hewland and other road racing dog-ring boxes, Bert and Brinn for stock cars, G-Force and Liberty clutchless for drag racing
  • Unique lubricant with solid microscopic particles offers low drag/high protection
  • Relatively low viscosity, yet cushions gear teeth under extreme pressure
  • Helps to prevent tooth breakage, resists throw-off
  • Designed for wet sump transmissions and differentials with splash lubrication
  • Sold individually in a 1-quart container





    Brand: Red Line
    Class: Not supplied
    Friction Modifier: No
    Type: Synthetic
    Volume: 1 qt
    Color: Blue
    Mfgr. Warranty: No Warranty
    Condition: New Product
    Return Policy:



    9 Reviews
    5 out of 5 Stars
    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Stars
    Customer Photos and Videos
    No user media. You can upload a photo or video of your install by posting a review.
    09 WRX 7 years ago
    5out of 5stars
    I waited until 77k to change tranny and rear diff. The product is great, I should have used it sooner. This with a little motul! If you are questioning getting it, don't anymore. Order it ASAP, you won't be disappointed. RSD was great as always with shipping and service.
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    Great Product 7 years ago
    5out of 5stars
    Changed my transmission / front differential out with this - great improvement in feel and sound, car is much happier and feels like it has more lubrication.
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    Like It 7 years ago
    5out of 5stars
    Scooby Snacks
    I was having trouble shifting into reverse unless i let the car roll back one quart of this mixed with Motul 75w-90 gear oil solved the problem. I don't see any difference in shifts after the oil change (as far as smoother shifting, but it solved my main concern and as always great customer support from the RSD team!
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    Great Mix 8 years ago
    5out of 5stars
    I put in my 02wrx 5 speed 3 qts of this Redline and 1 qt of the Motul. Works great and feels smoother. This with a stage 2 makes the difference!
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    BLUE PEPTOBISMO!!!  8 years ago
    5out of 5stars
    Its like blue peptobismo lol but texture and liquid construction is very useful.
    Was this review helpful?


    • Q: Mixing Redline Shockproof w/ Subaru Extra-S  ViperSTi7 years ago

      Can you mix the two? If so, would it help with a synchro issue? I am running only on Extra-S and it helped the Synchros greatly, but there is still a slight grind into the STi 6-speed 3rd gear. 4th gear mid/high rpm grind is completely gone.
      • 0 of 0 people found the following answer helpful

        A:  It is very common to mix this fluid with other gear oils, but we have not tried mixing with Extra-S. It should not be a problem to use both together, but we cannot guarantee that.

        Zach G. @ RallySport Direct 7 years ago  
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    • Q: Is it safe?  tcwedge93473329 years ago

      So do I just buy 4qts and just change the tranny fluid, refilling with this? Is it safe for my tranny? Are there any downsides or is it just regular ol tranny fluid with some benefits?
      • 0 of 0 people found the following answer helpful

        A:  Redline doesn't show it recommend for subauru applications, But we have seen some guys use it, This is very thick fluid.

        Kyle A. @ RallySport Direct 9 years ago  
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    • Q: .  nmc920302739 years ago

      is this fluid more likely to perform well in a 5mt than a 6spd? i've only read horror stories on iwsti, but OTOH only good things on lgt and would you suggest the mix of 3/1 shockproof/motul300 in my lgt?
      • 0 of 0 people found the following answer helpful

        A:  We typically suggest to stay away from mixing fluid manufactures, reason being that different manufactures use different chemicals which can react and become acidic or corrosive. So you will want to stay with the same manufacture of fluids and not be mixing them.

        Kirill C. @ RallySport Direct 9 years ago  
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    This Part Fits

    Universal Product
    This item is non application specific.
    Please verify compatibility before purchase. May require some modification for proper installation.