Product details
STP GST60150EN Gearbox Oil Treatment 150ml – Effortless Smooth Shifting
If your gearbox or transmission’s been feeling a bit stiff or noisy lately, the STP Gearbox Oil Treatment could be just the ticket. It’s a mineral oil-based additive that’s cleverly designed to sneak into those hard-to-reach nooks inside gearboxes, transmissions, differentials, back axles, and steering boxes. You know, the spots where regular oil tends to fall short? This treatment slips in smoothly, giving everything a slick, plush feel and making gear changes a doddle.
Why go for this gearbox oil treatment?
Well, for starters, it’s a proper handy fix if you want to keep your vehicle’s gearbox in tip-top shape without faffing about with complicated jobs. Just bung it in once and let it get on with the hard work. It’s also brilliant for coating freshly assembled parts to fend off rust and corrosion, especially if those bits are sat waiting around before they get to do their thing. Perfect if you live somewhere damp or if you’re dabbling in classic car restoration and want everything shipshape before firing up the engine.
How does it work, and when should you use it?
The additive blends seamlessly with your existing gearbox oil, giving an extra layer of lubrication exactly where it’s needed most. It smooths out gear engagement, cutting down on wear and tear – so no more grinding or awkward gear changes. Plus, it offers much-needed protection right from start-up, which is when your components are most vulnerable. Whether you’re topping up or doing a full oil change, this treatment can really help extend the life of your gearbox and other bits and bobs.
Technical specs and practical perks
- Contains 150ml of mineral oil-based additive – ideal for treating 3 to 5 litres of gear oil.
- Lightweight and compact (weighs just 155g), so it’s easy to stash in your garage or toolkit.
- Works well with most manual gearboxes, transmissions, and differentials.
- Prevents corrosion during storage and shields parts during those all-important first starts.
- Made by Armor All, coming from the trusted STP brand.
Some might wonder if it’s suitable for all gear oils or transmission types – it’s primarily made for mineral gear oils but can be handy across a range of setups. Definitely worth having a quick peek at your vehicle’s handbook if you’re unsure. All in all, it’s a no-nonsense, effective way to keep your gears shifting like butter and your mechanical parts well protected, with zero hassle.


