Need quick/harsh crankcase cleanse advice

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FYI, Gunk Motor Flush and K&W Motor Flush are composed of 60% - 100% diesel fuel per the MSDSs, so there's plenty of precedent for using diesel "safely" in crankcases for cleaning purposes. But that's as a temporary oil ADDITIVE, rather than as a 100% lube itself! Diesel is also used in at least a few "fuel system/injector cleaners," including CRC Fuel Injector Cleaner (>95% diesel), so it's also "safe" to add to gasoline tanks, but perhaps at 12 oz at a time. I'm not judging the effectiveness of either application, but simply mentioning that diesel in limited quantities is "safe" for both crankcases and gas tanks. (There's no absolute safety when using such chemicals...hence the quotes.)
 
Use kreen, idle it for a bit, change that oil filter often. don't use an idle flush until a few OCIs of maintenance cleansing/shorter intervals with something like kreen.
 
Frequent oil changes with 5w40 or 15w40 HDEO with MMO, bottle of redline fuel cleaner and clean the throttle body with some intake cleaner would be my suggestions.
 
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