Quote:
Originally Posted by Sasquartch
I'm always a bit dubious as to how effective these cleans are. If you've ever taken the inlet manifold off a 100k+ diesel and had a look inside they're normally absolutely caked with coked up deposits and it's hard to believe these will magically disappear, I'd not want big lumps of carbon being ingested into the engine
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Exactly this.
I had my 30d done professionally - IM cleaned in an ultrasonic bath (came out immaculately clean - literally box-fresh) and the inlet ports walnut blasted.
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