Buick Rendezvous Engine/Air Filter Change Pictures

[bxd20]

That's right, cold water on a hot engine and things could crack. If not metal, much of the hard plastic, like tubes and electrical connectors could crack.

Best thing is to take a cold/cool engine, cover the ECU and perhaps coil packs/ignition with a plastic bag, spray with degreaser of choice, let sit, rinse. Then drive the car so that everything evaporates. In northern climates I wouldn't do this in the winter. A nice hot summer day is the best. Been following this recipe for years with multiple cars and never had a problem (Rendezvous, Contour, Cutlass, Altima).

 

[Seguino]

I think if you got yourself one of those Filter Minder gauges you would find that a filter that you think is way past it's prime has lots of life left. The air filter in my pickup looked like yours and when I installed the Filter Minder it barely showed any restriction. With a hard to access filter box like yours the fewer the changes the better.

 

[Spector]

My cabin filters are always at least twice as dirty as the engine air filters.