Something no one else mentioned is that the oil you are going to be collecting from the businesses is going to be solid at those outside temps.

I live in Northern California and when the temps drop to the 40's it starts to become an issue with the oil solidifying.

Something to think about anyway.

Stephen

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85 300D 305K miles WVO(105K so far), Mine
82 300SD 235K miles BIO-D, Wifes
96 F250 SC PSD 4X4 285K MILES BIO-D, Ours
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