MAC5

1998 C5 manual shows two GM part numbers for Synthetic Power Steering Fluid. # 12345866 and 12345867 or equivelent. One of the dealers in the area sells the 866 for $11, and the 867 for $18 per qt.

Anyone know of a aftermarket product? Couldn't find any synthetic power steering fluid at either Advance or Autozone.

Help appreciated.

thanks

timemender

Valvoline makes a synthetic power steering fluid. I’ve purchased it from AutoZone (or was it Advance Auto? – I frequent both) in the past. (About a year ago) Check a NAPA store.

EDIT: I understand that Redline and Amsoil make synthetic PS fluid.

C66 Racing

AMSOIL did just release a synthetic power steering fluid:
AMSOIL Synthetic Power Steering Fluid (stock code PSFCN)

Ordering info in my sig.

1sickz51vette

I noticed some of the synthetics are clear... I removed my old fluid, but the new fluid still turned pink. Should I change it again?

MAC5

There is no difference in the "fluid" between the two GM parts numbers above. The 12345866 is for a 16 oz. bottle ($11), part # 12345867 is for the same fluid in a 32 oz. bottle ($18)


Out of curiousity, does anyone know what the entire Power Steering system fluid capacity is, unit and reservior??

Bull_in_a_china_shop

royal purple has one I am using

C4B4the04

I run Redline synthetic, no complaints here. I would suggest pulling a line at the rack to completely drain the system. Turn the wheel a few times, you'll get it ALLL out, and ALL over the place!!! I don't know capacity, thats somewhere online I am sure. As for bleeding the system after that, I might have a helpful suggestion....

The manual requires you to use a mightyvac and attatchment to bleed air out of the system. The step references a special GM part that replaces the cap on your PS tank and then you draw vacuum to get air out of the line. I made a cap out of a replacement one from AutoZone and a threaded vacuum fitting. Drilled and tapped the cap, screwed in the fitting and bam, done.

I don't recall excactly what you need to do but it went something like draw 10 inches vacuum. Then crank the wheel left and right to the limits with the car OFF. Then release pressue, repeat like 3 times? I got a TON of air out after I replaced my PS cooler (factory one on my base suspension car was not as good as the Z06 one, so I upgraded when I busted a fitting on it....long story).

HTH,
Cassidy

RyanR0101

Valvoline discontinued theirs. Too bad, since that's what I used, and it wasn't that expensive. I buy the AMSoil brand now.