Lucas Oil 10019 Hydraulic Oil Booster and Stop Leak - 1 Quart, White, 32 Ounce

Great product, good price.

I bought this on mistake thinking it was jack oil, it is not. It is an addictive. I did however have an old bottle jack that I replaced with hydraulic jack oil and it leaked a little so I added a squirt of this. This stopped the leaking! I had originally bought it to fill a flooorjack but unfortunately it looks like the Lucas oil I need only comes in bucket size.

Not a fan of snake oil additives, but years ago tried lucas power steering conditioner on my 98 Chev pick up that’s has an expensive hydraulic sensor to vary the power steering assist, also fixed a couple of steering racks with morning sickness. So when my jack developed leak and was leking down figured give it try. Drained jack, flushed with alcohol and put in fresh hydraulic oil with the Lucas. Took about 3 days but leaked stop and jack doesn’t leak down.

It's not unless you puncture it, but I plan on keeping in my vehicle for emergency jack repair so I recommend this company creat a twist tip or I will be forced to look for elsewhere.

My 3-ton, shop floor jack was leaking in a couple spots. One leak from the universal joint seal; another from one of the dual piston seals. To buy a seal kit (with no guarantees of proper fitment), was $50. $90 to buy a whole new bottle jack.Lucas Oil Hydraulic stop leak; $12. I drained the oil; flushed it thoroughly with fresh oil, added 10-20% Stop Leak (as the bottle recommends), the rest standard oil, bled it, & as far as I can tell the leaks are gone. The jack held a vehicle in the air overnight, which leads me to believe it's fixed, & that this product works.I'm very satisfied, & recommend it highly to anyone with a leaking floor or bottle jack.

I have a 89 jeep with a terrible designed clutch slave cylinder located within the bell housing of the transmission. It wasn't holding pressure and the clutch pedal went to the floor. figured I had nothing to loose if it didn't work I was going to have to drop the transmission anyway. Well i added a little of this to the clutch fluid and six months later no leaks and a solid clutch pedal. I highly recommend trying this.

I had read a review of this product on a Youtube site about fixing leaky power lifts for outboard motors, which used the word "miraculous". I had a chronic leak on my outboard power lift, and the product was not expensive so I thought I'd try it. It was indeed miraculous!! Totally fixed. I could hardly believe it. Just be patient, it does not go through pumps as fast as regular fluid. I NEVER write reviews but I had to this time.

My trim was leaking at the shaft seal. I put a few squirts if it in with the hydraulic fluid and a bit on top. Within a few tries it seemed like it was going way higher than before and leaking wayyy less. I’m hoping it lasts. Time will tell. Btw. This is on a 2000 Johnson outboard 50hp boat motor.Day 2 it was still leaking but not as much. I'm going to add some more today and check fluid level. It's tilting down way better but still struggling (although less) when I bring the motor up.Day 3 again leaking a little less each day. I haven't been out on the water yet but it seems to be holding up wayy better. I went to fill the resevoir yesterday and there was still fluid in there. Barely needed extra. I read that it can take time to fully resolve leaks. I'm optimistic.UPDATE: After being on the water for a few days, the trim did work better BUT it seems to have sprung a new leak potentially. I have to replace the seals after all. Disappointed.