Mercedes W123 SLS Suspension Fluid Flush and Filter Change 

Really easy to do! The system is somewhat different on my W202, but I see the method is basically the same.

Love your car Love Haddaway in the background Just did this on my 190e 2.3-16 after replacing leaky rear shocks

A good fluid to use: Royco 756, used in aircraft, missles, and ordinance. Get it at your local general aviation airport. High class and cheaper than MB and others I have seen.. If the system collapses overnight it can be debris in the old fluid, the valve plus the springs holds the level overnight. Inside the valve the interface that sustains fluid pressure is metal to metal. Debris allows slow leak overnight to allow the system to lose pressure.

Thanks for showing filter removal and how to flush system !!! This saved me, thanks.

Thanks for the tips. Now to figure out why my new alternator doesn’t charge the battery. (Blue wire has voltage. Battery lightbulb works, headlights brighten when I rev the engine. )

That's a gorgeous wagon! Love the Ducati also :D

Is the SLS fluid checked with the dipstick plugged in or just sitting on top?

Looks like a '85 that you converted to a Federal intake system.