Join Date: Aug 2006
Thanked 340 Times in 310 Posts
I didn't notice any drop in temp when I switched to Samco hoses.
I run Water Wetter too and the additive seems to have a pretty short lifespan; when I change it out after 6 months it's no longer pink. Change it often, and make sure you have no air in the system.
I did find a higher pressure radiator cap that lowered temps a bit. You might try that $15 mod before dropping lots more on fancy hoses.