Okay gents, I am looking for some advice. Some of you may remember that I replaced the screen in a spool valve assembly of a Honda Element some time back. Well, two months later, it threw a code again, and went into limp mode. Figuring that it was likely a faulty spool valve, I obtained a new OEM replacement, and went out to install it today. When I pulled the old one, the new screen I had installed in mid-September was almost completely plugged again with sludge/grit. Wasn't expecting that! So, I just cleaned the screen and reinstalled the old spool valve. My thinking is that this 260K (if'n I recall correctly) needs an engine flush...or two. As I've never had the need to do one before, I have no experience with the process. My old school way of thinking is to drain a quart of oil out, add a quart of diesel, idle it for 15 minutes, and then do a full oil change. However, I see that there are all sorts of engine-flush products on the market, so I thought I'd seek some input from anyone who may have used them, or even the diesel flush, in the hopes of educating myself before attempting this on a "customer's" car. Eventually, the plan is to install the new spool valve, once I'm satisfied with the cleanliness of the engine. I may be pulling the old spool valve to clean the screen a few more times before that happens, however.

What say you all? Any words of wisdom?