🛢️ Keep your engine leak-free and running smooth — because your ride deserves the best!
Wynn's Engine Oil Stop Leak is a 325ml advanced treatment that stops and prevents oil leaks by restoring the elasticity of engine seals and O-rings. Compatible with all engine oils and safe for catalytic converters, it lubricates and protects seals to extend engine life without requiring disassembly or risking oil performance.
| Manufacturer | Wynn Oil UK |
| Brand | Wynn's |
| Model | 50664 |
| Product Dimensions | 5 x 5 x 11.99 cm; 325 g |
| Item model number | 50664 |
| Manufacturer part number | 50664 |
| Item Weight | 325 g |
P**C
I pretty sure it does what it says on the tin
My daughter's 10 year old car developed a slight leak so I changed the oil, oil filter & drain plug although it appeared to be coming from above the sump. After all the above, it still had the same slight drip so put a can of this in & it's only been in a week but it appears to have solved the problem (fingers crossed cos I only bought her the car to teach her to drive in and she passed and wants to keep the car so I'm hoping it's fixed as I resent spending a lot on a nearly 11 year old car)
L**L
Works
Had a small but persistent leak forming on the gearbox to engine seal so bought this in case it was an engine issue and another product for the gearbox. Leak stopped within 200 miles. Also served as an excuse to change oils in both engine and gearbox. Let's see how long it lasts but as I couldn't find the leak visually, I assume it was some sort of internal o ring or seal? This stuff apparently reacts with the rubber material and makes it more pliable? Anyway hopefully good for the 12 months I plan to have the vehicle and no expensive repairs needed. I did also mix some Lucas stabiliser which is also awesome
A**A
It works
Easy to use , no issues
Z**.
It works! Great stuff
It works, really easy to use, and pretty cheap.
M**E
No good
Didn't work for me.
M**.
worked well for me
This stuff did work; I had oil slightly coming from the head gasket and was part exchanging my car, so I wanted to stop the leak and tried this as a long shot, and it worked so well. Obviously, this stuff is never going to repair a head for long, and to be honest, it could still be working now, but I part-exchanged the car a week later, so I don't know if it its still working but short term it was amazing
B**Y
Disappointed – Didn’t Stop the Leak
I had high hopes for this product, but unfortunately, it didn’t work for me. I followed the instructions carefully and gave it time to take effect, but the oil leak in my engine continued just as before.There was no noticeable improvement, and I ended up having to book a proper repair. It might work for very minor leaks, but in my case, it didn’t deliver.Disappointing result, especially considering the claims. Wouldn’t buy again.
D**D
Quality as a reasonable price.
A good product which i have used many times before, its easy to use and functions well. Delivered quickly and at a reasonable price.
Trustpilot
3 weeks ago
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