Quote:
Originally Posted by GTS Daddy
I always used the RainX fluid in my cars. After reading this post, I asked one of my former service advisors and he agreed with this post, at least for Porsche's. WTF!
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I have heard that people often add a 50/50 mix of distilled water and isopropyl alcohol to an empty washer reservoir to break down the gunk. Methanol (Heat drygas) or vodka can also work in order of aggressiveness...
Note that drygas or cheap vodka also work to winterize washer fluid when taking hot climate cars to cold climates where it isn't legal to sell the winter version of washer fluid...
The washer reservoirs are a pain to access. At least on the E90 it isn't as bad as the E70 where you have to punch out and replace POM rivets to remove the fender flares to get to the reservoir... For a while my e70 X5 had the front and rear washer outputs crossed up so the back and front washer controls were backwards. Very annoying but not as bad as actually pulling the fender flare to fix it. Eventually I fixed it when I changed the headlight lenses and had to remove the flares for that...
-Rich
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2007 E70 X5 4.8i with 10" android screen Running 265/60/18 AT34s All Terrains (Mainly for road trips)
2008 E90 335i with 10" android screen, 7" intercooler, inlets, Dinan intake, JB4 BEF, E85 conversion, Mfactory LSD, M3 suspension, EDC shocks with custom controller.