I DO NOT recommend using 20W50 in that vehicle. You can't really use oil that heavy in anything built after the early 90s. The engines were built differently with a lot smaller oil clearances, designed to use thinner oil for better fuel mileage. If you use oil that heavy you will get "dry starts" which will lead to heavy engine wear. If you have an oil pressure issue, repair it mechanically. If you have an oil consumption problem, then maybe consider the additive but not the heavier oil.
Saturday, March 5th, 2011 AT 1:50 AM