updraught
Well-known member
Cutting open oil filters to see what the difference is
https://www.youtube.com/watch?v=CnKcTslUwWw
I know with air filters, one of the problems is that some manufacturers try to put too much paper in with too many folds. This can restrict flow. It is noticeable when running LPG.
https://www.youtube.com/watch?v=CnKcTslUwWw
I know with air filters, one of the problems is that some manufacturers try to put too much paper in with too many folds. This can restrict flow. It is noticeable when running LPG.