See responses above in RED.
So I'll address your thoughts. And I'll tell you my thoughts and what I got from Steve.
When I first called him he diagnosed the fluid as boiling and once it boils, it is much more susceptible to pull air past the pump seal hence why once it happens, it happens more easily.
I think the reason it happened in the first place was a combination of sitting in traffic for a very long time, on one of the hotter days of the year and between the road engine and power steering fluid I used, it boiled just plain and simple. There is no expectation a system can cool itself at 5 mph (or less) while the PS lines literally cradle around the engine which is running hot because the fans kick on at 210.
Merely using the 9c1 cooler and getting the return away from the engine and giving it some chance to transfer heat (keep in mind, stock hoses on my car were all rubber, no heat transfer there) should provide adequate cooling to the fluid to keep it from boiling. A full on cooler isn't necessary, but once again, we get back to the cooler is better idea here.
So you're right he could use the 9c1 line and get great life from his new fluid and pump. For a little more money you could have a real setup and never have to worry though.
The real problem is.. Steve said you can't use synthetic in these systems because the seals will blow. So you can't get the benefits of the higher boiling temp synthetic fluid, which I did have at one point. And it worked very well. Then my pump quit. You tell me.
I can assure you my system is properly functioning and all is well. Steve said the vanes and all that were in great shape, just that seals were not in the best of shape and hence why the pump died. It was the gear oil put in there by the POs that really killed it, but that's none of my business... the thickness of 90 weight gear oil in a system designed for 5 weight will kill it every time. The pump will simply be strained A LOT.
I still recommend a filter. Lol
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