FWIW my 53 210 has an unvented cap however the system is vented. There's a small notch on the filler tube rim that allows the passage of air. The notch is in the 12 o'clock position in the pic below.
Last edited by Tiny; 05/27/202112:09 PM.
Save a life, adopt a senior shelter pet. The three main causes of blindness: Cataracts, Politics, Religion. Name your dog Naked so you can walk Naked in the park.
