How Do I Remove Stubborn Sludge From the Vacuum Tank?

Without a manway for access, this PRO finds tough going when removing thick residues after a winter service run.

Question:

I have two older trucks with smallish, heavy steel tanks (380 and 460 gallons) and no manways. During the summer the only issue we had draining them was diapers, rags, wet wipes and other non-biodegradable items. But now that it’s gotten cold (30s and 40s F), all...

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