Automatic Transmission Fluid in Power Steering Sys. Has anyone seen negative effects?
#1
Automatic Transmission Fluid in Power Steering Sys. Has anyone seen negative effects?
Did quite a bit of searching. Some say not to use ATF in our PS system, some say no problem. The FSM says it should be used.
I recently replaced a bearing on my ps pump and used the opportunity to flush the old fluid from the system. I then replaced it with a Universal automatic transmission fluid instead of power steering fluid. Has anyone used ATF succcesfully in their PS system?
I recently replaced a bearing on my ps pump and used the opportunity to flush the old fluid from the system. I then replaced it with a Universal automatic transmission fluid instead of power steering fluid. Has anyone used ATF succcesfully in their PS system?
#2
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The base fluids are compatible. Many OEM's that use the same type of pump and rack recommend Dex3 ATF. I have seen many dealer service techs use ATF including Mazda techs. Often in the shop if a car was noisy with standard PS fluid we would flush with ATF and that would solve it with no adverse effects. Modern ATF has much better anti-foaming agents thus they often work better than standard PS fluid. The only cars I would avoid this on would be honda as they use a special type of fluid, and some Euro cars that require Pentosin CHF fluid.
#3
RX-7 Bad Ass
iTrader: (55)
Yeah, you're fine. If it runs good, no noise, etc. go with it. If it makes noise, replace with PS fluid.
I've always just used a good grade of power steering fluid and have never had a problem. I just re-did my PS system, had the WHOLE system totally empty, replaced with Prestone power steering fluid, working like a champ.
Dale
I've always just used a good grade of power steering fluid and have never had a problem. I just re-did my PS system, had the WHOLE system totally empty, replaced with Prestone power steering fluid, working like a champ.
Dale
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