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kevinp



Member Since: 28 Sep 2019
Location: Telford
Posts: 1205
United Kingdom 2011 Range Rover Autobiography TDV8 Santorini Black
Plenum hoses sweating?

I replaced my plenum hoses about 2 years ago with silicone ones and the engine is running fine.
Over the last few months I've noticed that they have an oil film on the area only between the hose clamps on the exterior of all four hoses.
Everywhere else is dusty dry.
Is it possible that the hoses are becoming porous?
I can't think of any other reason.
Thanks Kev.
Post #670540 6th Aug 2023 7:07am
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JayGee



Member Since: 27 Jul 2021
Location: London
Posts: 3196
United Kingdom 2012 Range Rover Vogue 4.4 V8 Orkney Grey

Normal for Silicone hoses. 2012 TDV8 Vogue (L322)
Post #670546 6th Aug 2023 8:48am
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Tdtj



Member Since: 29 Sep 2021
Location: Edinburgh
Posts: 185
Scotland 2016 Range Rover Autobiography SDV8 Santorini Black

I’d say silicone ones. As per the first sentence 2016 4.4 diesel
Post #670574 6th Aug 2023 2:42pm
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Rudyard1



Member Since: 15 Nov 2021
Location: Leicestershire
Posts: 75
United Kingdom 

Exactly the same as mine - 3.6 Tdv8 replaced the hoses a while ago and they’ve had this slight mist of oil over them too! Can’t understand why?

The inlet manifold was cracked and this exacerbated the misting but since fixing and degreasing everything, the fine film of oil is still present….. 2007 Range Rover Vogue 3.6 TDV8
Post #670592 6th Aug 2023 8:56pm
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kevinp



Member Since: 28 Sep 2019
Location: Telford
Posts: 1205
United Kingdom 2011 Range Rover Autobiography TDV8 Santorini Black

Thanks Rudyard1. Reassuring that it's not just mine.
Post #670597 6th Aug 2023 10:11pm
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