The sun is shining, the weather is sweet. Makes me want to move, my filtering setup.

I recently got a nice 40L batch of waste oil. I filtered it through my 1 micron filter sock and used it to collect my folks from Luton airport. Not sure the airplane part is particularly eco but at least the journey back was.

I wanted to blog something about filtering in changeable weather that nobody seems to address, it may be that it simply isn't a problem but it bugs me nonetheless. As we all know the used veg picked up from restaurants contains a certain amount of different oils and fats from the food its used to cook. As long as these oils and fats are free from chips and fish heads the car actually seems to run quite happily off them as long as they are liquid enough.

The problem is that if I filter when the weather is nice and hot some of the fats that get through may be less than liquid by the time they are sat in my fuel tank on a cold morning. I would have thought this would increase the risk of clogging filters when you first start up and the tank is cold. I haven't actually noticed this problem myself although I do sometimes re-filter my supply if the weather has taken a dive towards the arctic. I do feel my theory is correct but wonder why nobody seems to have problems.