Originally Posted by maramu123
My question is simple maybe, but I feel I need to sure.
Can I use WD40 in the engine compartment to clean and preserve all parts, including alternators, electrical connections etc. etc. Or...should I dismount two alternators, isolate all connectors and maybe waste hours of time?
Thanks for any kind of helpfull reply.
WD40 is very similar to a diesel
and kero mix. Stoddard solvent was something we also used to mix with diesel
to provide a low cost preserver for protecting military vehicles in storage
I avoid it in our engine room for several reasons:
1) the residue is oily and attracts dirt and crud. Makes working on the engine a messy experience
2) alternators and electrical equipment
and connectors should be kept dry and free of dirt and crud.
3) anything we can do to prevent a fire or the severity if one starts is worthwhile doing. That oily residue is a fire hazard.
Here's what we do:
1) wipe up all spills as they occur
2) place an oil
absorbent pad under the engine / trans to stop any non critical leaks
or drips from making a mess
3) use an orange oil based biodegradable degreaser to keep all mechanical components clean. They leave no residue. Alternators and most good solid state regulators can handle a wash. Clean components make visual inspections and early leak detection possible. Degrease with the engine and components warm.
4) clean and repaint engine, trans, etc as needed.
5) keep the bilge
spotless. Again visual inspections are key.
6) Any 'preserver' will stink. We dont have or want any diesel, oil or lubricant smells in the boat. If I smell it it means I go looking for a leak. Good preventative maintenance
starts with cleanliness and orderliness.
All our electrical buses are mounted high so we degrease without wetting electrical connectors. Any connectors in wet or potentially oily areas are sealed so can handle a degrease and clean.
What sold me on our Liberty 458 was the clean and well laid out engine room. The previous owner was as OCD as me.
The only use for WD40 on our boat is as a frozen stud remover. Add heat and it works a treat.
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