Lucas Oil10019 Hydraulic Oil Booster and Stop Leak - 1 Quart, White, 32 Ounce

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.

I have a 1949 Ford 8n tractor that was experiencing the issue of weak hydraulic lift. I added the bottle of Lucas and operated the tractor for approximately a half hour. The hydraulics have drastically improved in that short time. The lift is much more responsive, and higher after the additive was introduced. I will continue to run/operate the tractor as time permits. I am a firm believer in Lucas products and am clearly impressed with this one as well. Thank you Lucas!

Great product, good price.

Works well

had a leak in my hydraulic pump one my 150 yamaha motor stopped the leak no problems since

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.

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.

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.