i think some silicone hose will weep oil ..A quick question to those with silicone intercooler hoses... is it normal for them have residue form on the outer surfaces after some use?
the film of oil inside the intercooler system comes from the turbo ..
evidently a small amount of oil in there is considered normal
there is a type of silicone hose that resists oil ..
but haven't see that type in intercooler hose kits
Fluoro Silicone Hoses Explained :
http://www.viperperformance.co.uk/plainpage.php?pgId=56
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from: .. http://www.approvedturbo.com/wp-content/uploads/ATC-Oil-Leak-Troubleshooting.pdf
SEALS:
" The main purpose of the seals at both the compressor and turbine ends of the center housing is to prevent the high pressure gasses from entering the center housing and then to the crankcase! The fact that that the seals prevent oil from entering the housings is secondary. "
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i doubt it .. as the cause of crud in the manifold is from the egr valve exhaust inletAlso, does the intercooler generally get as full as much crud as the inlet manifold on a non-blanked EGR set up?
the heat bakes that oil from the turbo onto the inside of the manifold
so .. no egr valve .. no buildup of that crud as with the egr valve fitted ..
( i.e. the intercooler being before the egr valve in the air-flow direction )
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