Post Number: 33
|Posted on Saturday, 25 June, 2022 - 08:26: |
I read somewhere that someone had found a good substitute for our (green) mineral hydraulic oil
Anyone hear or read anything about that also?
Trying to remember where I read it
Just curious about the idea.
Post Number: 3294
|Posted on Sunday, 26 June, 2022 - 05:26: |
One place is the table entitled, Miscellaneous Hydraulic/Braking System Mineral Oil Based Fluids and Their Properties, in the RR & Bentley Parts, Repair, Restoration & Other Resources Compilation
Post Number: 35
|Posted on Monday, 27 June, 2022 - 13:33: |
In searching the list I come to find that the oil mentioned is no longer manufactured but the replacement is-
TRW Hydraulic System Mineral Oil LHM Plus
@ $23-$30 per quart
Hyd leaks will be expensive if not fixed!
Post Number: 791
|Posted on Tuesday, 28 June, 2022 - 09:16: |
Ouch ! in the Uk it is about £30 ( about $36 ) for 5 litres
Post Number: 3295
|Posted on Tuesday, 28 June, 2022 - 09:35: |
See also the very long topic on RollsRoyceForums.com: https://www.rollsroyceforums.com/threads/mineral-system-oil-where-to-source.3825/
Post Number: 43
|Posted on Thursday, 14 July, 2022 - 10:07: |
Read the entire topic
Post Number: 175
|Posted on Monday, 01 August, 2022 - 00:24: |
Don't forget that a lot of post DS / pre C5 Citroens used LHM fluid.
Don't know if there are many Citroens in your part of the world.
Post Number: 3302
|Posted on Monday, 01 August, 2022 - 02:45: |
This topic has made me go back and revisit the one I linked to, as well as making additions to the hydraulic mineral oils properties table in the RR & Bentley Parts, Repair, Restoration & Other Resources Compilation.
Anyone marketing HSMO+ or LHM+ has a product that is the same thing. There are several sources I consider reliable who have stated that the source factory for these various products is the same one.
Even two Pentosin CHF formulations should be perfectly adequate for the task.
It's also pretty clear that if the product states it conforms to either one or both of the following specifications, ISO 7308 and CitroŽn/Peugeot PSA B71 2710, it's perfectly OK for use in the cars that require HSMO+.
Several of the various spec sheets explicitly state something along the lines of, "Certain CitroŽn/Peugeot (PSA B71 2710), Rolls-Royce
& Bentley models."
CitroŽn, RR, and Bently all eventually went to hydraulic systems using hydraulic system mineral oil with separate braking systems using conventional brake fluid. Hence the "certain" as some use it for braking and hydraulics while later cars do not. We all know that hydraulic mineral oil and DOT3/4/5.1 brake fluids do NOT mix!