Steering Assist Fluid - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 9 Old 09-20-2010, 07:50 PM Thread Starter
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Steering Assist Fluid

In another post regarding problems with a Redneck Ram Assist, there was a discussion regarding the correct fluid to use. I'm installing a PSC kit which includes their modified box. Appearantly, Chrysler uses ATF +4, while PSC says to use ONLY Power Steering fluid. Do I need to flush the balance of my system, or should I just fill and bleed with PS fluid? If needed, how do I flush the system?

97 ZJ 5.2, Atlas, hp30, 8.8, alloys, locked F&R, Clayton LA lift, 35" KM2's
97 TJ 110" WB, Atlas, 350 chevy, D60, 14B, 42" Pit Bulls.
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post #2 of 9 Old 09-20-2010, 07:59 PM
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What does your psc kit includes , ram, new or old ported box and a pump with new reservoir and new hoses

Just use royal purple ps oil and stick with it. If you have the psc kit you dont need to flush anything
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post #3 of 9 Old 09-20-2010, 08:08 PM
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If you're installing a full system, including the pump, reservoir, box, and ram there should nothing to bleed, since all of the components are new and clean.
Just fill it with a high quality Power Steering Fluid (Royal Purple) and bleed the air out.
I honestly think that the ATF+4 is a Mopar Pump thing. I would disregard the other discussion as it doesn't apply to your application.
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post #4 of 9 Old 09-20-2010, 09:14 PM Thread Starter
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I started out with their new economy kit, which a modified tower that I was to exchange for the tower on my stock box. The tower is the block on the steering box that has the hydraulic lines feeding into. The modified block has the extra ports for the cylinder. The balance of the kit included the cylinder, weld tabs, hoses and fittings. The price was $425. Similar to The Redneck kit, but I didn't have to send my box in to be modified and be down 2 weeks. The problem came when I tried to remove the stock tower/block. Chrysler changed suppliers for the 2010 models and the tower is different than the 2007-2009 models. PSC was not aware of this, so to remedy the problem, they gave me a rebuilt modified older box for a great price. Soooo, I still have the stock pump with ATF +4 in it, but PSCs steering box and cylinder. Mine is probably the same situation as the Redneck one I refered to.

97 ZJ 5.2, Atlas, hp30, 8.8, alloys, locked F&R, Clayton LA lift, 35" KM2's
97 TJ 110" WB, Atlas, 350 chevy, D60, 14B, 42" Pit Bulls.
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post #5 of 9 Old 09-20-2010, 10:15 PM
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It's up to you. A lot of opinions and claims on this topic.
But as long as I'm running and OEM Mopar pump, I'll keep running ATF+4 because it has worked flawlessly for myself and many and others, while others are jamming up Mopar pumps using PSF.

If I ever upgrade to a PSC pump, I will completely drain and flush the system and switch to Royal Purple PSF.

The steering gearbox and ram cylinders are pretty much the standard designs that have been around forever, so I don't think that they are as sensitive to fluid types as the newer pumps seem to be.
Just my thoughts.
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post #6 of 9 Old 09-21-2010, 02:59 AM
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Thats correct if using stock power steering pump definately stick to atf4 if using psc high flow pump stick to royal purple.

Co4Lo do you have auto or manual. What is ur setup? Stock pump ported or standard?








Quote:
Originally Posted by Co4Lo View Post
It's up to you. A lot of opinions and claims on this topic.
But as long as I'm running and OEM Mopar pump, I'll keep running ATF+4 because it has worked flawlessly for myself and many and others, while others are jamming up Mopar pumps using PSF.

If I ever upgrade to a PSC pump, I will completely drain and flush the system and switch to Royal Purple PSF.

The steering gearbox and ram cylinders are pretty much the standard designs that have been around forever, so I don't think that they are as sensitive to fluid types as the newer pumps seem to be.
Just my thoughts.
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post #7 of 9 Old 09-21-2010, 09:50 AM
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I'm planning on sticking with ATF+4 for mine....
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post #8 of 9 Old 09-21-2010, 01:36 PM Thread Starter
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OK, here's the straight poop from the dealer computer. "The recommended fluid for power steering in the 2010 Wrangler is Mopar Power Steering Fluid +4, but if unavailable, ATF+4 will work." According to a different dealer, the specs for the 2 are identical, but the Mopar fluid, which is clear color, costs over twice as much as ATF+4. I just topped off with the latter and thoroughly bled the system. When the level stayed and the bubbles quit, I started it up and all is well. Works great. Moab, here we come. (In a month)

97 ZJ 5.2, Atlas, hp30, 8.8, alloys, locked F&R, Clayton LA lift, 35" KM2's
97 TJ 110" WB, Atlas, 350 chevy, D60, 14B, 42" Pit Bulls.
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post #9 of 9 Old 09-21-2010, 02:31 PM
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Quote:
Originally Posted by Venturer View Post
OK, here's the straight poop from the dealer computer. "The recommended fluid for power steering in the 2010 Wrangler is Mopar Power Steering Fluid +4, but if unavailable, ATF+4 will work." According to a different dealer, the specs for the 2 are identical, but the Mopar fluid, which is clear color, costs over twice as much as ATF+4.
Kind of lends to my thought.... Chrysler was trying to save a buck using ATF. I wonder if the additives in ATF are causing them issues (as everyone else seems to think it will (i.e. PSC, WTO, the internet in general)).

Just saying.
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