Adding Sea Foam to my Volkswagen Jetta 1.8T engine’s oil [SOLVED] Asked by Ricardo R. In Alabama How much Sea Foam should I add to my 03 Volkswagen Jetta 1.8T engine’s oil? The oil capacity is 4.8 quarts.
Thanks for the question Ricardo. Just add half a can every oil interval. That will work ideal for a 4.8 quart system!