Rejuvenating rubber hoses (intake, PCV, etc.)

Joined
Jul 26, 2016
Messages
10
Location
Moçambique
Hey team,

I'm pulling apart the intake on my '94 80 Series 1HD-T to clean it up and investigate the oil "spray" at the joints. As she has a few years on her, the rubber ends have lost their elasticity. Has anyone had luck rejuvenating those hoses a bit? Belt dressing, Armorall, etc.? Any other tricks I should consider to avoid replacing everything? Thanks.
 

LINUS

Waiting for the Great Pumpkin
 
 
Joined
Mar 29, 2003
Messages
4,723
Location
PNW - WA
I’m trying a trick a local aircraft mechanic told me:

He slathers those ribbed uni-belts in Formula 303 (aircraft type rubber dressing?):

https://www.amazon.com/gp/product/B06XQ32LVZ/ref=oh_aui_detailpage_o02_s01?ie=UTF8&psc=1

- from what he’d heard it extends the service life from 60K change-out to well past 100K. I’ve got just over 60K on the Tundra/3UR so I’m doing a belt with the 303 stuff. At the rate I put miles on it, it’ll be a ~15yr belt.
 
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