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Foretravel Owners' Forum

Foretravel Motorhome Forums => Foretravel Tech Talk => Topic started by: jor on July 13, 2020, 06:25:25 pm

Title: Hydraulic Stop Leak
Post by: jor on July 13, 2020, 06:25:25 pm
Awhile back we were discussing different additives to our hydraulic system which is 15-40 motor oil. I had written Lucas but didn't receive a reply so I tried again. Got lucky this time. Here is the reply:

Quote
Good day and thanks for the question. The product I would recommend would be our Engine Oil Stop Leak at a 20 precent treat rate. ( PN 10278 ) This product will mix perfectly with the 15w-40 engine oil and over time will help slow the leak by rejuvenating whatever seal is worn and dried out. This product is available at most autoparts retail locations. thanks for using Lucas.

My steering gear is not leaking (yet) but one of my fans is seeping and it looks like the seeping rate is increasing. Not enough for a drop but definitely wet. I'm going to try some of this Lucas additive. I've used Bars Leak for the coolant system in a couple of rigs with good result so I'm hoping for the same with the hydraulic system

These older rigs hold 23 quarts so I'm adding 1 gallon and a half quart or so. Same price at O'Reilly's. More on eBay.
jor

Title: Re: Hydraulic Stop Leak
Post by: John44 on July 13, 2020, 07:20:07 pm
My thinking on the hyd system is to use synthetic oil to take advantage of it's low temp flowing abilities,less pressure, less leaks, but the stop leak can't hurt.
Title: Re: Hydraulic Stop Leak
Post by: Pierce & Gaylie Stewart on July 13, 2020, 07:45:49 pm
I've had great luck with additives for auto transmissions and PS. Check the reviews and I would start with a lesser amount. I had a really bad leak on a MBZ auto trans at 280K miles where it had a steady stream out the bell housing. One quart slowed the leak in a few miles, the second quart stopped it. That was 140K ago and not one drop come out the bottom now. The chemicals in the additive soften the seals and expand them a little.

When we blew the hydraulic pump/fan hose, it ran dry but took much less than 23 quarts.

Pierce
Title: Re: Hydraulic Stop Leak
Post by: Chuck Pearson on July 13, 2020, 08:34:52 pm
Quote from: jor –
Awhile back we were discussing different additives to our hydraulic system which is 15-40 motor oil. I had written Lucas but didn't receive a reply so I tried again. Got lucky this time. Here is the reply:

My steering gear is not leaking (yet) but one of my fans is seeping and it looks like the seeping rate is increasing. Not enough for a drop but definitely wet. I'm going to try some of this Lucas additive. I've used Bars Leak for the coolant system in a couple of rigs with good result so I'm hoping for the same with the hydraulic system

These older rigs hold 23 quarts so I'm adding 1 gallon and a half quart or so. Same price at O'Reilly's. More on eBay.
jor


Go for it John, I've had nothing but good luck using Lucas stop leak.  Including some semi-miraculous cures, I'm a believer. 
Title: Re: Hydraulic Stop Leak
Post by: jor on August 16, 2020, 09:19:35 pm
Update on Stop Leak

I went full on with the stop leak method. To address the seeping hydraulic fan and preempt the steering gear seal failure I used Lucas Engine Oil Stop Leak. While I was at it I treated the engine cooling system with Bar's 1196, again a preemptive move. Finally, I went at the dash air with Red Angel. I am happy to report up to this point anyhow, there is no longer any seepage I can see at the fan, the radiator continues as it was and the dash air is blowing nice and cold.
jor


Title: Re: Hydraulic Stop Leak
Post by: Pierce & Gaylie Stewart on August 16, 2020, 10:42:49 pm
But not good to add any Olestra Oil. I've heard it has some negative side effects.

Pierce
Title: Re: Hydraulic Stop Leak
Post by: John44 on August 17, 2020, 02:39:24 pm
Have used Red Angel,good stuff.
Title: Re: Hydraulic Stop Leak
Post by: Hans&Marjet on August 17, 2020, 02:57:19 pm
I feel "plugged up" just looking at those additives lol  :o  :o  :o
Title: Re: Hydraulic Stop Leak
Post by: propman on April 21, 2022, 08:59:29 pm
Quote from: jor –
Update on Stop Leak

I went full on with the stop leak method. To address the seeping hydraulic fan and preempt the steering gear seal failure I used Lucas Engine Oil Stop Leak. While I was at it I treated the engine cooling system with Bar's 1196, again a preemptive move. Finally, I went at the dash air with Red Angel. I am happy to report up to this point anyhow, there is no longer any seepage I can see at the fan, the radiator continues as it was and the dash air is blowing nice and cold.
jor

How any cans of the Red Angel, just 1?



Title: Re: Hydraulic Stop Leak
Post by: oldmattb on April 21, 2022, 09:57:27 pm
Quote from: Pierce & Gaylie Stewart –
But not good to add any Olestra Oil. I've heard it has some negative side effects.

Pierce
Seepage from the rear end?
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