I have a tight engine compartment. Can I screw the Walker oil drain check valve into the bottom of the AIRSEP?
No. The Walker check valve must be located at the engine block at the bottom of the oil drain line, just above the oil level in the oil pan. Failure to locate the Walker check valve at the lowest possible point above oil level may affect AIRSEP efficiency. The check valve must not be positioned on its side and should ideally be installed in a vertical position.