- Putting the hoses on was a pain. These hoses go on extremely tight. KY jelly came to the rescue here – I knew there were other uses for KY other than…….
I don't think it's recommended to use petroleum products on rubber hoses. Silicone products are preferred I believe.
Absolutely correct. Petroleum products degrade the rubber. Silicone grease both lubes & protects the rubber.
For the sake of accuracy, please say silicone grease, not silicon grease.
Not to get distracted; but, the OP recommended KY jelly which is a water based lubricant which has to be 'rubber friendly' for other reasons. Its should be safe for the coolant hoses; but, silicon grease is probably a better choice because it is not runny like the KY product and does not evaporate like the KY product or the other stand-in, dish detergent.
A lot of the time you will get a blank look if you ask for silicon grease. Silicon grease labeled as 'silicon grease' at the consumer level tends to come in those little tubs for lubricating things like the zippers on wet and dry suits and tends to get nice labels like safe for the aquatic environment with an appropriate price. However, silicon grease is readily available from most suppliers in those tubes labeled dielectric tune-up grease. Pretty much the same stuff at a slightly more reasonable price. A single tube of dielectric grease should last a life time of coolant hose replacements and spark plug boot lubricating and gasket lubricating.