Posdible Upgraded PAS Fluid Cooler

**Ian Simmonds** · 18 December 2012, 20:39

On the rallyrep, we've fitted the cooler coil from the S6... It mounts up on the subframe.

**Error404** · 18 December 2012, 21:38

Have you had heat issues from the hydraulic system Andy?

**Rusty** · 19 December 2012, 07:38

TBH, I was more worried about the accordion hose splitting. The steering assistance can become a bit impaired under high loads for extended periods buts it's very rare. would look cool though

**SteveH** · 16 October 2016, 18:32

Thread revive. My steering was affected by overheating PAS fluid at ADI this weekend. Noisy and heavy steering when the fluid got hot and back to normal once it had cooled. I'm going to try a cooler fitted in front of the main rad. Another track day required to see how much improvement it makes. I'm looing at something like a 7 or 9 row jobbie, has anyone fitted one already?

**Jiri** · 16 October 2016, 20:30

I changed my hydraulic oil for military h515.
Much better resist on hot and cold temperatures. My pump and steering is a much better.

**SteveH** · 16 October 2016, 20:54

Exotic stuff, not sure how easy it would be to get that juice over here. May be easier/cheaper for me to cool the fluid I have. Low temps aren't an issue in the UK.

**AndyP** · 16 October 2016, 21:01

Originally posted by SteveH

Exotic stuff, not sure how easy it would be to get that juice over here. May be easier/cheaper for me to cool the fluid I have. Low temps aren't an issue in the UK.

Not that hard, and it's not too expensive either.

AeroShell Fluid 41 - 1 US Quart

http://www.transair.co.uk/sp+Aeroshell-Fluid-41-AeroShell-Fluid-41-1US-Quart-DEF-STAN91-48-OM15-MIL-PRF-5606H+2041

AeroShell Fluid 41 contains additives which provide excellent low temperature fluidity as well as exceptional anti-wear, oxidation - corrosion inhibition and shear stability. In addition metal de-activators and foam inhibitors are included in this high viscosity index fluid to enhance performance in hydraulic applications. AeroShell Fluid 41 is capable of wide temperature range operation.AeroShell Fluid 41 is intended as a hydraulic fluid in all modern aircraft applications requiring a mineral hydraulic fluid. AeroShell Fluid 41 is particularly recommended where use of a "superclean" fluid can contribute to improvements in component reliability, and can be used in aircraft systems operating unpressurised between -54C to 90C and pressurized between -54C to 135C. SPECIFICATIONS U.S. Approved MIL-PRF-5606H* (both U.S. and European production) British Approved DEF STAN 91-48 Grade Superclean* (European production only) Meets DEF STAN 91-48 GradeNormal (European production only)Equivalent to DEF STAN 91-48Grades Superclean* & Normal(U.S. production only) French Approved DCSEA 415/A Russian Analogue to AMG-10 NATO Code H-515* (equivalent H-520) Joint Service Designation OM-15* (equivalent OM-18)

We'll let you be the guinea pig!!

**Taavi** · 23 October 2016, 08:42

How does it work with the seals when moving from G002000 to Aeroshell 41? No leaks so far?

Posdible Upgraded PAS Fluid Cooler

Posdible Upgraded PAS Fluid Cooler

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