Just some random thoughts. I wouldn't be too confident of any tint saving your hoses. I did 20 on the rear. It really cuts down night driver visability hugely. It's frankly dangergous, but i rarely drive at night so it's worked for me. It does affect your abiltity to detect police cherries at distance, and i'm talking daylight here. I'm really thinking about pulling it. I don't leave my car out enough to worry about the hoses, but it is a gamble. Although if you simply look at your hoses once a year, you should be able to see the uv degredation occur and simply replace a few up top. Now the coolant tank will give not warning. I don't have that Cali sun here in the midwest.