Foretravel Owners' Forum For owners and Fans of Foretravel Motorcoaches September 14, 2025 ...

Hydraulic System Fluid

October 12, 2011, 11:35:37 pm

99 320

On my 225 I changed the hydraulic system fluid and replaced it with the same 15-40 motor oil called for in the manual. I'm changing it now in my 320 and was wondering if anyone is using synthetic rather than the SAE 15-40 stock stuff. Thanks.
jor

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Re: Hydraulic System Fluid

Reply #1 – October 13, 2011, 05:17:58 pm

Jor,
I replaced my hydraulic oil with Amsoil SAE 15W-40 Heavy-Duty Diesel and Marine Motor Oil. It is the same oil I run in the Coach and generator engines.

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Re: Hydraulic System Fluid

Reply #2 – October 13, 2011, 06:08:58 pm

Thanks, Bob. I think that's exactly what I'll do!
jor

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Re: Hydraulic System Fluid

Reply #3 – October 13, 2011, 08:52:40 pm

I use Amsoil in all situations as I believe it does help a lot. Maybe I should inject some in my back-who knows?
John

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Re: Hydraulic System Fluid

Reply #4 – October 14, 2011, 02:30:24 pm

I replaced all fluids in my U320 with AMSoil synthetics about 7 months ago, even the chassis grease.

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