Quote:
Originally Posted by mbzman
Rotella 15W-40 seems to work well in my 300CE. I would like to try something thinner for winter months. I think a 5W-40 diesel oil is a good grade for year around use. What is the difference between Mobil 1 Delvac and regular Mobil 1 5W-40 diesel? Where can I find the Delvac in Canada? I haven't seen it at any chains or auto parts stores.
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Delvac is a conventional oil from what I remember. I am still using the $3 gallons I purchased last year in most of my vehicles when it was on sale + the Mobil rebates.
Do not worry about leaks arising from using syn, just means it was ready to begin leaking anyway. On a 150k M117 you just have to worry about the valve cover gaskets and the oil level sender. This is not your SBF that starts to leak from the oil pan and front main at 100k.
Hell you could just run 5/40 syn Diesel year round and change it every six months.