VC-9 before repairs. / ?
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Fleet Mechanic
Joined: Jan 2007
Posts: 1,708
Likes: 7
From: Circle City
VC-9 before repairs. / ?
I am in the process of joining the 
"club" of doing the infamous 'egr cooler delete" as well as installing a rebuilt kit for the oil cooler.
I noticed that VC-9 is an important ingredient during the coolant circut cleaning process.
I wanted to know if using VC-9 before any attempted repairs is necessary.
I will be using VC-9 after the repair since I'm almost done removing parts to access the intake, but it seems to me a benefit if this cleaner was used PRIOR to any dismantling of engine components.
In other words do it before and after a egr cooler & oil cooler R&R would be my question/statement. It seems the "right/****" thing to do.
I don't think the shops would do it this way though.
Any thoughts?
"club" of doing the infamous 'egr cooler delete" as well as installing a rebuilt kit for the oil cooler.I noticed that VC-9 is an important ingredient during the coolant circut cleaning process.
I wanted to know if using VC-9 before any attempted repairs is necessary.
I will be using VC-9 after the repair since I'm almost done removing parts to access the intake, but it seems to me a benefit if this cleaner was used PRIOR to any dismantling of engine components.
In other words do it before and after a egr cooler & oil cooler R&R would be my question/statement. It seems the "right/****" thing to do.
I don't think the shops would do it this way though.
Any thoughts?
FTE Legend
Joined: Jul 2005
Posts: 65,938
Likes: 1,432
From: Millersville, MD
Seems to me that the cleaning AFTER would just start the crud build up faster into the NEW/replaced cooler(s). Would thing that a BEFORE cleaning would break the crud loose and you would FLUSH it out prior to installing the new cooler(s). But, I'm usually ALWAYS wrong in these matters!
Elder User
Joined: Aug 2009
Posts: 905
Likes: 0
From: Inverness, Fl
I agree BPofMD I think it should be done prior to oil cooler repair so getting all the crap out of the system before add the new cooler..Just my .02
How about it cheezit what do you think ?????
How about it cheezit what do you think ?????
Senior User
Joined: Sep 2006
Posts: 187
Likes: 0
From: northeast missouri
i am getting my oil cooler replaced next saturday and i am flushing all week. did vc-9 yesterday. flushed that then run some prestone superflush to day flushing that. now i am refilling and flushing with distilled water once a day till friday. also getting the diesel site filter on tuesday hope to get it installed by friday.
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