Product details
Automatic Transmission Stop Leak 325ml – SILVERHOOK SGA08 Gear Oil Additive
So, if your car’s automatic transmission is starting to leak or those gear changes are feeling a bit rough around the edges, the SILVERHOOK SGA08 gear oil additive could be just the ticket. Rather than diving into a full-blown service, this little gem works by rejuvenating the rubber seals inside your transmission — those pesky seals that tend to dry up or shrink over time, leading to leaks and a drop in performance. You simply add it to your gear oil, and it helps cut down on fluid loss, meaning fewer top-ups and less faff overall.
What’s It Actually Doing?
In a nutshell, this additive smooths out your gear changes, so you’re not left with jerky shifts or that awkward hesitation when changing gears. It also tackles that annoying steering whine some cars get, especially when the transmission’s under pressure. It’s a straightforward fix for a common hassle — if you’ve spotted leaks or your car’s feeling a bit clunky when changing gears, this could save you a trip to the garage and a fair bit of hassle.
How to Use It & Compatibility
It couldn’t be simpler: pour the 325ml bottle straight into your automatic transmission oil. It blends seamlessly with your existing gear oil and gets to work quite quickly. While it’s mainly designed for automatic transmissions, it’s always worth having a quick gander at your vehicle’s handbook or checking in with a mechanic if you’re in doubt. Plus, the bottle size is spot on for most average transmission oil capacities, so dosing is a doddle without any guesswork.
The Nitty-Gritty & Benefits
Made by Silverhook Ltd, the SGA08 comes in a neat, compact package measuring 22 x 8 x 4.2 cm and tipping the scales at around 328 grams — perfect for stashing in your toolbox or glovebox. Beyond just stopping leaks, it helps keep your transmission in good nick by keeping those seals supple and preventing premature wear and tear. Essentially, it’s like a bit of TLC for your transmission’s innards.
When Does It Come in Handy?
- If your transmission fluid keeps mysteriously dropping
- When gear shifts feel rough or hesitant
- If there’s a whining noise coming from the steering or transmission area
- To maintain seal condition in older motors
- As a preventative measure during routine maintenance
All in all, the SILVERHOOK SGA08 gear oil additive is a cracking choice if you want to prolong the life of your automatic transmission, nip leaks in the bud, and enjoy smoother driving. It’s not a magic wand for every transmission woe, but for seal-related leaks and fluid loss, it’s a smart, wallet-friendly fix.

