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ATF fluid viscosity? S40-V40

posted by  kilou on  Thu Feb 19 22:17 CST 2004
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last visit: Thu Oct 22 03:22 CST 2009
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Hi

My car is quite old now and the steering feels very light. Car has been checked and there is absolutely no play anywhere. The dealer told me that with 216000km, the steering pinions are a bit worn so the steering feels lighter than when new. I'd like to know if it is possible to pour an ATF fluid with a higher viscosity in the power steering in order to "stiffen" the steering?? Is there different viscosities available for ATF? Will it damage the power steering pump if the fluid has a higher viscosity than now?

Thanks








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    ATF fluid viscosity? S40-V40

    posted by  Elwood on  Fri Feb 20 13:23 CST 2004
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    You have lots of options, but I don't know if the PS pump will like some of them. There is racing ATF available, which might be thicker. There is also regular PS fluid, but whats the viscosity? You could also try any of a multitude of hydraulic fluids. I would give someone like Redline Oil a call and ask the chemist. They sell almost all that stuff and could probably give you a decent answer.

    Power steering pumps aren't very discriminating, btw. They'll be OK with almost anything.








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    ATF fluid viscosity? S40-V40

    posted by  someone claiming to be a volvo tech on  Fri Feb 20 02:25 CST 2004 [RELATED]

    Use only what Volvo suggests.Changing to a higher viscosity fluid could increase pressures to an unacceptably high level,damaging the pump,hoses or rack.







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