what is a egu flush
Never heard of an egu flush
Possibly an ECU flash? A flash is a reprogramming or updating of the engine or powertrain computer (ECU). Do some reading at the link.....https://en.wikipedia.org/wiki/Engine_control_unit
@FordNut....EGU Flush - it's probably a Volvo thing, and top of the morning to you sir.
Only thing I can think of is an ECU flash. Never heard of "EGU."
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