Easy effective way to clean coated exhaust underneath the car

The exhaust is coated from the headers back. What's an easy method to clean the entire exhaust. It looks to be jethot or some type of temp coating. Will a diluted apc be ok with a brush or microfiber for improvement?

I'm not a detail expert by any means, but your task has some similarities to this chore; I have helped clean up our Jump Airplanes under belly. These are gas engines with short "header-esque" straight dump exhaust tubes that empty directly under the belly of the fuselage. Our aircraft are typically older, early 60's - 70's some late 50's and they "breathe" their share of oil and occasionally some hydraulics from cooling vents under the cowl, just fore of the exhaust. The prop does a great job of spreading this film wide and thin in repeated intervals all day long, (pre Covid19). The exhaust does a very good job of curing this slop into a hard to remove coating. Many of the classic solutions were used: APC's undiluted or very high ratio mix, Aviation fuel, (high octane btw), Kerosene etc, Goo Gone and multiple car wash mixtures. All wiped down by hand in a 2 stage process. The various solutions did the job to greater or lesser degrees.... NOW THE INFO: By accident, a few years ago, we ran out of rags and someone grabbed a used Swifter Wet Floor Cleaner Pad and intended it for the final wipe-up phase..... voila! it took off everything easily, so easily that we grabbed some of the new ones and tried them in the "cleaner phase" and again we were amazed. It saved, time, money, wasted fuel, VOC's, etc, but mostly.... smelly pilots. IMO, It's worth a shot, here's a view of a dirty belly Cessna and a ("selfie" of me & my daughter, her 1st):
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