LMAO @ cheeries and blueberries!

 

Bob,

I know you specifically asked about engine temperature. Engine operating temp/efficiency aside, however, keep this in mind:

Blocking front openings for improved Cd provides a small reduction in energy spent to overcome aero drag. However, whenever the reduced opening area causes the fans to turn on instead of using 'free' ram air to do the job, the couple of hundred fan watts required will generally use more energy than you saved by aero improvement. So, you would get an improvement on sufficiently cool days/high speeds/low loads for the fan to stay off, but on warmer days/lower speeds/higher loads this would hurt fuel economy. Since you are now operating above the fan on temp, I suspect the fans are always on, so this mod is likely hurting your vehicle efficiency. Unless you raised the fan on temp accordingly.

 

I was driving through a blizzard in my wrx when I noticed my oil temp was 245+. This was way hotter than normal. The stock coolant temp showed just a little hotter/warmer than usual. It turned out my grill was clogged up with ice/snow. That car had a water to oil cooler.

Do you have an oil pressure gauge or light?

Also what mpgs are you getting? Did you actually see an improvement with the aero mods?

 

UPDATE: I didn't see any real earth shattering improvements w/ my grill blocks, so I removed my upper grill block to allow the car to run somewhat cooler than with the full upper and lower grill blocks. I think with my daily commute of speeds less that 60 MPH that the aerodynamic efficiency I was looking to achieve is kinda a moot point. I've gotten 34 MPG outa my last 2 tanks w/ mixed driving, so I really can't complain, considering that the car is rated for 25 MPG combined driving.