Originally Posted By: rg200amp
Its very cold out and metal contracts in the cold. If you have a blowtorch i'd try to heat up the top of the filter, let the metal threads heat up a bit and expand, and see if it will unscrew then.
You may just have to take it to a local autoshop and let them deal with it. Too; if anything breaks, its on there dime.
This is a totally unrealistic and unreasonable position. Shops can only take responsibility for things under their control i.e. for their mistakes. The only sensible position for a shop to take in this situation is - We will get it off and take all reasonable precautions to avoid collateral damage, but if any damage does occur, you will be paying for it.
I will occasionally run into customers like these -- anything that happens is the fault of the person working on the problem and he will have to pay for it. I can usually spot these people in advance and let them know that I cannot guarantee against damage. Sometimes we cannot agree and then the person no longer remains my customer.