I am having someone come out to detail my engine (it needs it BAD :biggrin
which involves a high pressure system. Is this a good idea? It seems these cars can be finicky with the connections. Here is the general procedure as outlined by the detailer's website (even comes with a disclaimer):
* Top of engine is chemically treated and pressure washed with soft water to clean and remove all possible dirt and grime.
* Engine is dried for a spot-free finish.
* An engine dressing is applied to all plastic restoring shine and protecting from heat.
Please Note: Any time chemicals and high pressure water are used to clean your engine there is a small possibility that moisture may cause an engine part to
fail. This is beyond our control and we will not be responsible for repairs. This is the safest method to clean your engine.
*Engines that are extremely dirty and oily may require additional cleaning at a slightly higher cost.

* Top of engine is chemically treated and pressure washed with soft water to clean and remove all possible dirt and grime.
* Engine is dried for a spot-free finish.
* An engine dressing is applied to all plastic restoring shine and protecting from heat.
Please Note: Any time chemicals and high pressure water are used to clean your engine there is a small possibility that moisture may cause an engine part to
fail. This is beyond our control and we will not be responsible for repairs. This is the safest method to clean your engine.
*Engines that are extremely dirty and oily may require additional cleaning at a slightly higher cost.