do not use petrol as its not good for the foam or glue that is used
get yourself a couple of ice cream containers with the lids that you can put away until next time
a litre or 2 kerosene in the icecream bucket, if you can find an old servo with a kero pump you only pay about a buck a litre
wash the filter in the kero to get rid of the old oil
then wash in a bucket of soapy water
allow to dry
now your other icecream bucket you put your bottle of air filter oil into the bucket , dip the filter in there and squeze lightly the excess out
put the lids on the icecream buckets for next time
allow the filter to dry preferably overnight
refit filter and ride
tip laxtex gloves are $10 or so for a 100 pack, very useful for doing air filters
