

🛠️ Keep your engine young and leak-free — because your ride deserves the best!
STP 78595 High Mileage Oil Treatment plus Stop Leak is a 15 fl oz dual-action formula designed to extend the life of high mileage engines by reducing wear and sealing minor leaks. With a 50 SAE viscosity, it ensures optimal oil flow and engine protection, all packed in a compact, easy-to-use bottle trusted by professionals.









| Brand | STP |
| Product Dimensions | 18.34 x 9.27 x 4.7 cm; 430.91 g |
| Item model number | 15604B |
| Manufacturer Part Number | 18411 |
| Position | Outside |
| Item Weight | 431 g |
| Viscosity | 50 sae_grade |
V**N
Good product
Good
H**A
Not worked
Not worked on engine minor oil leakage
B**S
Solid product in my 2012 E250 with over 400 thousand k’s. Stopped the leak & saved my driveway Buy with confidence
R**R
Like this product. Never had a bad one. I had a problem with the engine
J**E
Works as expected
C**B
Good stuff, had a pretty bad oil leak on my 08 Audi A6 caused by hardening of the o-rings on the VVT. Replaced those and added this on the oil change to be extra safe. Completely stopped the leak and honestly felt like it drives a bit better too. Will probably just use this on every oil change from now on.
J**.
STP is always a good product.
Trustpilot
5 days ago
1 month ago