BlueDevil Products 00239 Hydraulic Stop Leak - 1 Quart

Had a slow leak on my snow plow. Put just a little bit of this in and ran the hydraulics for about five minutes to work it in and I use the plow every day with no leak.

I have bought many products claiming to seal leaks. But rarely did they work.This product worked as advertised. It sealed a pretty bad leak on my hydraulic cylinder. Saved me a lot!

I first used this product to stop my engine oil from leaking. It worked! I used to stop at the gas station to check my gas and fill up my oil. That worked so well that I tried the product to stop leaks in the hydraulic system on my backhoe. Worked great! Probably saved $1,200. This stuff is great.

My 51 year old terramite backhoe showed significant leak stoppage.

My utility tractor had developed several leaking cylinders over the past few years, some had become fairly heavy leaks!!I Added this product to my tractors hydraulic tank at the recommended amount for the system size, let the machine run for 10mins to warm up and mix, cycled all the hydraulic cylinders to full travel about 10 times each to ensure the additive got into each cylinder. I was hopeful that after using the tractor that day this product might help to slow the leaks down a little!! To my Complete Suprise in the 5 or less minutes it took me to get ready to get on the tractor to start the work I had planmed for it that day, the leaks had all but stopped, within 10 minutes of using the loader to move some dirt the leaks (ALL OF THEM) had stopped completely! That was nearly 4 months, and many hours of work ago and still no drips.

I had a small seal leak on my front tractor loader rams. I purchased this product in good faith with guarantee that it would work. I changed all the filters and changed the hydraulic fluid ( ten gallons) and added the stop leak product. It worked for a short period of time ( about 30 days ) and then the leak became very severe leaking well into loosing my hydraulic fluid. Cost of 180.00 for the hydraulic fluid plus the the cost of 2 bottles of product. I hope that the Company makes good on the warranty..

Product probably works ok, but one of the bottles was damaged and some of the product leaked out. Amazon won’t replace without returning the damaged bottle, which is too much trouble since I’m 20 miles away from a return center. So, my loss, I guess.

Excellent for use in any vehicle