Hi, I'm new to the site. Just picked up a demo 15 sport ltd. I have a idea for a heater. I was thinking of using the oil cooler lines and placing it in series with the line. Then use the fan to control heat out put. Just to be safe I was thinking of putting a cold oil bypass valve. To protect the system and ensure no loss of oil pressure. Thoughts ?!? I cold place it under the console, possibly run a vent to defrost the window???
I think there are pros and cons.
First off, it looks like it would be pretty easy to do with the stock cooler due to it's location. Just cut an opening the same size as the cooler under the dash, add a hinge to the piece that got cut out to make a door and add some sort of cable mechanism to close the door.
However, I think the cons outweigh it.
1. There will be some air leakage even when the door is closed, in the summer you'll still get some hot air which you don't want.
2. All year around you might get dusty air coming in from under the dash, not good.
3. This only works on the passenger side, no heat for the driver.
4. From my measurements, coolant is usually hotter and warms up faster than oil, especially in the winter. That's why cars use coolant instead of oil for their heaters. High end BMWs use electric heaters blowing on your feet, in the seat, and on the steering wheel because in really cold places, when you really need it, it's much faster at heating.
I think the easier way to go is with seat heaters. I bought a set of 4 heating pads (2 per seat) from Amazon for about $50 total and wired them up to a lighted switch on the dash. You can really feel it through your pants and back, even through a jacket. Doesn't require the oil to get hot and no holes to cut or potential issues with dust, etc. You can feel it within less than a minute, within 2 minutes you're nice and toasty.