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Can anyone direct to the correct power steering fluid for an MKIV?I looked in the owners manual and could not find it.I tried a search here but it was not working.Thanks in advance.
I found some posts on another board and there seems to be some agreement on what VW specs and some disagreement on suitable options.This does not seem to matter which model or year. Please correct me If this is not true.VW G004 000 M2or Pentosin CHF 11S (Green in color)Others are saying you can use ATF +4 or Dex VI and it works fine. Others are saying to only use the VW or Pentosin.What folks do tend to agree on is if you use generic PSF it will screw it up.Any added insight?
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When VW switched over FROM ATF to CHF in 1991-1993, the actual parts numbers stayed the same, only the fluid changed from Dex III, which is what they were using then. So,it"s not DEXIII anymore. Mercedes Benz uses ATF+4 and is the same PS parts suppliers as VW. The fact of the matter is, ATF is the most common fluid used in Power Steering. CHF came on the market and all the manufacturers simply rushed to it. They all came from Dexron III, which isn"t anything special, it"s ATF, and Mercedes went back to ATF+4 from CHF. If anyone thinks that CHF is the ticket to flawless Power Steering function, and longevity, needs to look into all the failures.Dexron VI is now certified for PS service as well. The difference is ATF+3/+4 and Dex VI are now allsynthetic. ATF+3/+4 is even a specially formulated Synthetic (less grabbier than Dexron), FOR Chrysler for their **** Transmissions. It"s perfect for PS systems.CHF is an aircraft grade hydrolic oil for use at high altitudes (mega-cold temps). What is the purpose of it in auto applications except in arctic service? It"s expensive, and NOT necessary. They"re basically 10 weight oilswith anti-foaming additives, which is what ATF+3/+4 and Dexron VI has.Mercedes has used CHF in all their sedans since the M112/M113 engine was introduced. The only MB vehicles to use an ATF are the US built SUVs. The exception to that will be ML450 hybrids withelectrohydraulic steering. All other vehicles with recirculating-ball steering will use an ATF Steering Gear Oil (A 000 989 88 03 10) subs to BQ 146 0001. DTB S-B-46.25/70 indicated proper PS fluid. I use ATF+3/+4, or DexVI in all my hydraulic power steering applications, it must be asynthetic. Can also use Valvoline Syn PSF, Royal Purple synthetic power Steering fluid. People havetopped off with these and went well over 130K miles.