1981 MCI 9 Power steering fluid?

johns4104s · May 28, 2009, 07:43:31 PM

What type of power steering fluid do I top off with?

Thanks

John

johns4104s · May 28, 2009, 08:54:19 PM

The book says (actually I have the maint on disc, which is very hard to read) says 10W-40 oil. Is this really true? What are you guys out there using?

Thanks

John

JackConrad · May 29, 2009, 04:00:05 AM

Quote from: johns4104s on May 28, 2009, 08:54:19 PM
The book says (actually I have the maint on disc, which is very hard to read) says 10W-40 oil. Is this really true? What are you guys out there using?
Thanks
John

Yes, sorta? Some power steering systems call for 10W-40 and some call for ATF. I do not which call for what? Our MC-8, which has OEM hydraulic assist, had ATF in it when we got it so that is what we have used. We are hoping to install an integral sterring in a couple weeks and was told to run 10W40 in it. Jack

jhaggerty · May 29, 2009, 04:40:31 AM

I have been using 10w40 for five years with no problem. My manual says the same as yours.

Jim

rdbishop · May 29, 2009, 06:04:29 AM

Some use the same oil they use in the engine in case the seal goes out in the power stearing pump.

Richard

busshawg · May 29, 2009, 07:25:39 AM

I'm using straight 40

JohnEd · May 29, 2009, 08:36:52 PM

All of these systems are parasitic drains on power and MPG. Pure synthetic is the best lube and thinnest oil. If it is within your reach price wise, I can't see using anything else.

John

TomC · May 29, 2009, 08:39:05 PM

Simple- if it is red, it is ATF. If it is brownish, it is 15W-40 engine oil. Highly recommend you NOT use straight 40 weight, since if you get into cold weather, you risk possible pump damage from thick oil. Good Luck, TomC