The repro heat exchangers on mine raise the temperature by about 10 degrees C inside the bus at the end of a 20 mile journey. Thats from -3 degrees to +7 yesterday morning.. There are a couple of hot air leaks back by the engine where the corrugated hoses go to the Y tube and some metal sleeves have got pushed out of the way while I was fighting to put the tubes on. Buying new stuff from the US - convert the USD to GBP to find the amount the stuff actually costs. . Budget the USD figure as GBP total cost. The difference goes in tax & duty. I bought a $200 wideband O2 kit off plxdevices in the US and I got a little card through the letterbox inviting me to go online to the UK Post Office website, give them a credit card number as payment, and then they would actually deliver the parcel. It cost £200 in total give or take a bit. Thats better than driving 20 odd miles to the courier depot to pay them the tax & duty if the shipping is by courier e.g. UPS.
On the drive to work i have a little crochet blanket over my leg to keep the chill off. I also do the normal big coat, hat and gloves, but i think the crochet blanket is the best
For my winter driving I use an old German army sleeping bag, that has legs and arms in it. Cut the feet out and stitched in some elastics in the legs and fold up the bottom flap for extra bum comfort. Iggle piggle has got a fashionable all in one blue thermal suit similar. Those pesky Germans. Knew a thing or too, I'm just waiting for them to design a low maintenance family car it might just be popular.
Fitting a nice propex or eberspacher and plumbing it into the main heater pipe to the dash still seems like the best option, if not the cheapest. If you've got a non walkthrough cab you can fit it between the seats and point some heat rearwards too.
