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Thread: Power steering oil cooler

  1. 8th January 2007, 03:46 AM #1
    cols110
    cols110 is offline Master
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    Power steering oil cooler

    G`day all, anyone fitted an oil cooler in their power steering return line.

    I`ve had a few ocassions where my oil has been very airated, I don`t think it has actually boiled as the fluid seems OK, I am thinking of fitting a small cooler in front of the radiator to see if it helps at all, I think the problem is more related to high RPM than actual heat, as my TD5 spends a bit of time on the limiter, sometimes it actually overflows and blows a bit of fluid out of the reservior, as well as a squeeling sound from the steering box. I am hoping with fitting a cooler the extra oil capacity may help a bit.

    Anyone done anything similar and can shed some light on if it made any difference or not.

    Thanks
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  2. 8th January 2007, 04:56 AM #2
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    1103.9TDI
    1103.9TDI is offline Master
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    Smile

    G'day Col, mine does the same, especially in tight areas ie frequent lock to lock, although I do try not to make it squeal. What I've thought about doing, is rather than fit an oil cooler, fit a spin on oil filter assembly, so you get the extra oil capacity, locate it so it gets some ventilation/cooling, and you get nice cool, clean fluid, with an easy to change filter. It's all good.
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  3. 8th January 2007, 05:25 AM #3
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    rick130
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    You could try running Castrol Transmax Z instead of the OE Texaco power steering stuff. It tolerates high temps much better, or just run Redline MTL, yep, the 75W-80 gear box oil. Tim Slako, the Redline importer, tipped me off to this one when I was quizzing him which would be the best fluid just to combat this. Works fine as a hydraulic fluid and gives better protection to the steering box. A lot of racers use it in lieu of an ATF to combat boiling/foaming.

    I use Transmax Z as it gets a bit colder than where you are in winter
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  4. 10th January 2007, 05:23 AM #4
    cols110
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    Thanks for that, I have a spare bottle of MTL so might switch on it, the gearbox does`nt really like it, so I may as well chuck it in the power steering, and a cooler and filter might just be the go as well.

    Thanks again
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