True Flow air filter cleaning kits are no longer available and mine is overdue for a cleaning. I do have K&N filter oil sitting on my shelf but it is designed for a paper filter. I think the best bet is to use foam filter oil designed for a motorcycle filter since they are made somewhat similarly to the True Flow. Any thoughts?
Foam Filter Oil is for all street, off-road, and racing foam air filter applications. Innovative Bel-Ray technology has produced a foam filter oil unlike any other. It is easy to apply and improves airflow. Ultra-viscous formula forms an oil barrier to trap micron-sized particles that can cause engine damage. Waterproof formula prevents clogging when wet.