Power Steering/Hydro-Boost Flush

[Hook'em_Horns!]

Originally Posted by AlisoBob

It absolutely circulates...

Pull the return line, and with the motor running and the truck parked with no steering movement, you'll see no movement in fluid through the system. UNTIL you activate the brakes or turn the wheel, then fluid will move in the system.

Thinking you have a continuous flow of hydraulic fluid as with the Allison is incorrect, IMO.

[gr8shot]

This needs to go back to the top always good PM for the hydroboost!!

[Ridin'GMC]

Good write up! I def need to do this on mine. It's been squealing lately and hard to turn.

[eyecatcher01]

im planning on doing this tomorrow and curious what is the best fluid to put back in her? hookemhorns said that he was trying dex VI so wondering it that will work or should i just stick with oe fluid?

[Ridin'GMC]

Valvoline Dexron VI. Pretty much the same fluid you use in your Allison tranny.

[eyecatcher01]

alrighty...i will give some valv dex vi a shot

[shiftybullet]

Would Transynd work? I have a lot left over from my last tranny oil change.

Kody

[Hook'em_Horns!]

Originally Posted by eyecatcher01

alrighty...i will give some valv dex vi a shot

After my little hill climbing adventure, Dmax finally met its match mine’s toast and needs a flush….Time to go synthetic with the DexVI and Flush the Brake fluid…pedal’s gettin’ strange and mushy.

Originally Posted by shiftybullet

Would Transynd work? I have a lot left over from my last tranny oil change.

Kody

Sorry, never tried it in the PS/HB.

[Toyaholic]

Do we have to pay a shop to do this to stay in warrantee?

If not, how much fluid do I buy?

[Hook'em_Horns!]

No different than changing your own oil...except it’s maybe easier.

A couple of qts can do it, no more than a gallon...till you see it run clear.