How to check engine vacuum hoses<br>Check each hose for bulges and swelling. If a hose feels soft or spongy when you touch it, this can indicate damage caused by your car's oil. [substeps] A swollen hose that is cracked and hard is often caused by heat damage.

Based on the paragraph above can we conclude that "Oil is more likely to damage the hose than heat"?
It's impossible to say