OER Parts offers a wide selection of Oil System & Parts for your 1986 Buick Regal. OER Parts offers 1986 Buick Regal Bypass Valves, 1986 Buick Regal Dipsticks and Tubes, 1986 Buick Regal Filter Adapters, 1986 Buick Regal Oil Coolers, 1986 Buick Regal Oil Filters, 1986 Buick Regal Oil Pan Baffles, 1986 Buick Regal Oil Pans, 1986 Buick Regal Oil Pickup Tubes, 1986 Buick Regal Oil Pumps, and 1986 Buick Regal Oil Senders.