covering over the radiator

[JHZR2]

Hi,

Many diesel medium buty trucks and school busses get a cover to reduce the airflow to the radiator. Would this be useful in 20s or below weather in our cars? I would assume that it would allow faster warmup, which in turn would reduce wear when cold.

I drive mostly all highway, over 65, but the problem is that my apartment is about half a mile away from the highway. I dont like to let the car sit and idle, as the unheated parts wear funny, and it causes high iron readings when doing oil analysis. Its better to warm up under light load... But 65mph (or even 55 if I drive slow) isnt exactly light load. I hate going onto the highway and having my engine temp at 40 or so, so anything that could quicken the warmup would be great. I already dont run the heat until the car is up to temp. I think the fact that I run on the highway would make it ok to have something covering the radiator, as the air hitting the oil pan, etc at high speeds whould have a sufficient cooling effect.

Has anyone done or tried this? Any suggestions?

Thanks,

JMH