Our vendor that comes in to wash our busses does our engines once a year he knows not to hit the ecm's or main electrical connectors. If we have to wash one on our own we use zep punch or purple power.
We pressure wash them on annuals now, so we can keep track of leaks and such. Also clean the radiators on transit buses, as we have had problems with overheating when the weather warms up. We use Share Corp.'s Formula 10 degreaser.
"Growing old is mandatory. Growing up is optional."
We clean our diesels whenever they come in for service. Helps me keep an eye on leaks and helps them run cooler by clearing the radiators. Also keeps the drivers happy by not getting their hands or clothes dirty while doing their pre-trip inspection. I use NAPA engine cleaner/degreaser and high pressure hot water. Doing this on a regular basis really helps eliminate pesky leaks before they get nasty.
We clean our diesels whenever they come in for service. Helps me keep an eye on leaks and helps them run cooler by clearing the radiators. Also keeps the drivers happy by not getting their hands or clothes dirty while doing their pre-trip inspection. I use NAPA engine cleaner/degreaser and high pressure hot water. Doing this on a regular basis really helps eliminate pesky leaks before they get nasty.
This NAPA product, does it fade the engine paint? I'm looking for a good degreaser and have a NAPA right next door. I wish they would try to sell me things like that. They're kind of in disarray at our NAPA dealer here.
It doesn't seem to take the paint off. It works wonders for cleaning everything under the hood and on the firewall. I haven't noticed any negative effects as of yet. I usually buy it by the case when NAPA puts it on sale. Usually get it for $1.99/can. Cheap investment in my opinion.
I have used a product from Carbrite. It is a mixture of two products of theirs; The Converter and Blue Max. It really works better than anything I have tried before but unfortunately I do not have a dealer that comes by anymore. I will be trying the NAPA product that was mentioned here though.
I have all kinds of degreasers, some stronger than others. The best thing for the engines is a diesel burning pressure washer. You dont need any degreaser if you can pressure wash is with hot high pressure water. Just don't hit the electronis directly with the high pressure water.