OER Parts offers a wide selection of Oil System & Parts for your 1970 GMC C35/C3500 Pickup. OER Parts offers 1970 GMC C35/C3500 Pickup Bypass Valves, 1970 GMC C35/C3500 Pickup Dipsticks and Tubes, 1970 GMC C35/C3500 Pickup Filter Adapters, 1970 GMC C35/C3500 Pickup Oil Coolers, 1970 GMC C35/C3500 Pickup Oil Filters, 1970 GMC C35/C3500 Pickup Oil Pan Baffles, 1970 GMC C35/C3500 Pickup Oil Pans, 1970 GMC C35/C3500 Pickup Oil Pickup Tubes, 1970 GMC C35/C3500 Pickup Oil Pumps, and 1970 GMC C35/C3500 Pickup Oil Senders.