Slick 50 Manual Gearbox Treatment 80ml



Fitted bundle deal

includes Accessories + Fitting

Item: 300400

Slick 50 Manual Gearbox Treatment 80ml


(Unit price: £199.88 per litre)

How can I get it?

FREE Click & Collect

  • Description
  • Reviews
  • Delivery Options
  • Help & Advice
  • Buying Options
  • Slick 50 Manual Gearbox Treatment Product description

    The Slick 50 Manual Gearbox Treatment helps protect against friction and the extreme pressure of gears under stress making gear change easier and smoother.

    features & benefits of Slick 50 Manual Gearbox Treatment

    • Protects against friction & extreme pressure of gears under stress
    • Gear operation becomes easier & smoother
  • Slick 50 Manual Gearbox Treatment 80ml is rated 4.3 out of 5 by 6.
    Rated 5 out of 5 by from Stopped my 3rd gear crunch My Peugeot 2.0hdi was suffering with a crunch when changing into 3rd gear Every time...after changing the worn linkage and gearbox oil it was still there,but This stuff cured the crunch. I drained out half a litre of fluid and mixed this stuff with some fresh gear oil and topped up. Results was almost instant and now no more crunchy box.thankyou
    Date published: 2018-10-18
    Rated 1 out of 5 by from Waste of money Absolutely rubbish didn't do as description says my money was taken
    Date published: 2017-08-22
    Rated 5 out of 5 by from Awesome! use this in all manual transmissions. started slick 50 about 20 yrs ago and it dropped the temp of my trans so much i could touch it after running the he!! out of it. Before i used slick 50 it was too hot to touch from just normal use. Shifts way easier too now. have used it ever since. and will always.
    Date published: 2017-05-05
    Rated 5 out of 5 by from Gear oil I've used this product for a short while but from the reviews I hope it does what it ought to do, need to go for few miles more to be sure of its performance.
    Date published: 2017-03-13
    Rated 5 out of 5 by from Brilliant ,like all Slick Products. I am an ex mechanic and used Slick products for many years on cars and bikes. The gearbox treatment was used replenish the gearbox oil which l was changing on a Moto Guzzi. I had used this treatment years earlier and found it transformed the gearbox,and would now slip through the gears easy and smoothly.( CANNOT BE USED WITH A WET CLUTCH !) Slick products have transformed dramatically my engines as well.I dont like spending money if l dont have too, but i dont begrudge the cost . Would be nice in this day and age if it was a bit cheaper,hey ho.
    Date published: 2015-06-10
    Rated 5 out of 5 by from Dose what it says on the packet! This is a high quality product and this is reflected in the price. But when added to the gear oil I found that the gear change was smoother and that my vichele ran smoother. Top marks for me!
    Date published: 2013-12-04
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    • clientName_halfords
  • UK Delivery

    £3.99 Delivery available on orders under £40 placed by 8pm*

    Please allow 3-5 working days for delivery. Your delivery date will be communicated at checkout.


    UK Delivery

    FREE Click & Collect - you can reserve an item online and pick it up from a store of your choice

    Simply enter your Postcode on the product page to check availability, and select Click & Collect at checkout. What's more, you pay for your items on collection. Click here to learn more.

    Items in stock - collect from 1 hour
    If your item is in stock at your chosen store, you can collect it from one hour after ordering online. We'll hold your item in-store for seven days.

    Items not in stock
    Please allow 3-5 working days for collection. We'll text you to let you know when your item are ready to collect. We'll hold your item in store for seven days. All delivery times will be shown during checkout.


  • You can buy this product from one of our carefully selected Approved Partners. The full list of options available are below. Simply add your chosen option to your basket and proceed to checkout when you're ready.

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Some of the parts we sell here at Halfords have been reconditioned. These will carry a Refundable Deposit or an extra surcharge amount. When you add one of these reconditioned items to your basket, we'll add this extra cost automatically.

Once you've sent us your old item we'll check it over, and then refund you the full surcharge as long as everything is ok.

Before you return your old unit please make sure it's in re-serviceable condition. So if you're returning caliper casings, you'll need to double check they aren't badly damaged or broken. If the part you've sent is found to be unserviceable, we reserve the right not to refund the surcharge.

Please note that if you're returning your old unit to our National Returns Centre then this will be at your own expense.

Slick 50 Gearbox Oil

Slick 50 Manual Gearbox Treatment 80ml

£15.99 Slick 50 Manual Gearbox Treatment protects against friction & pressure of gears under stress.