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I have an NA8 that I use on track and I have noticed that after I have been on track the power steering fluid reservoir has got a layer of fluid on it and the level has dropped a few mil.

So what is going on?

Is it boiling or is it surging up the neck of the reservoir under cornering? It's a bit of a worry because I dont to start a fire!!

Mine has always done it. It's much worse at skidpan sessions than track days. Changing to Redline PS fluid cut the spillage by about half.

manga_blue wrote:...spillage ...

What he said. Not boiling, just good ol' centrifugal force.

Is the O-ring on the reservoir cap in good condition or even missing?

motorkhanas, skidpans, tracks, i get it every event. it is normal.

Thanks for the tip Garry...I will be sure to check the cap for a seal of some sort!

Good to know it seems to be normal, we should all check our reservoirs and see what condition the seal is in!

mine is 2 months old, and it still happens.

You definately can boil the P/S fluid and that is probably what is happening...in the race cars we always fit a P/S cooler...

http://www.daviescraig.com.au/Oil_Coole ... tails.aspx