<p>Is there an acceptable, readily available substitute for W201 SLS
fluid?</p><p>I find it necessary to use the 16v for a daily driver this week. I
put a used control valve in it, and now it goes up and down when I work the
lever on the valve, and it holds base pressure. I want to get rid of my test
fluid (universal farm hydraulic oil) and put in something close to what is
supposed to be in there before I install the new accumulators. </p><p>Is it
safe to use the tractor fluid for a few days? The stuff is kind of smelly, so I
worry about it harming the rubber bladders in my accumulators. </p><p>I found
an old message from Meade that suggested 5606A aviation fluid was the closest
match, but it seems the stuff is outdated. Common stuff now if 5609, 5606B
might be available, I think it superceded 5606A. My neighbor, the ex aircraft
mechanic, suggested that 5606B was very much like Dexron, but I don't know if
he was basing that on facts or just on them both being red and thin. !
He did say it had less viscocity loss than 5606A when warm. I'm thinking
Dexron wouldn't be likely to damage the bladders in my new accumulators, but
I'd like to be sure. </p><p></p><p>Mitch</p><p>1979 300SD</p><p>1986
2.3-16</p><p>1987 2.5 turbo</p>
