Heavier oil for long drive?

Messages
3
Location
Langhorne, PA
I have a 98 Dodge minivan 3.3L 105,000mi which I will be driving to Florida from Pennsylvania and back this month. I currently use Mobil 1 10-30. Should I consider using something heavier like M1 0w-40 or Delvac 1 5-40? I plan on driving about 12 hours at a time. Any recommendations??
 
Messages
3,073
Location
moutain country
i have a book on lubes and making your engine last 1,000,000 miles and one put out by the SAE it suggests that on long trips use a heavier oil such as a 40 wt..thats what i been doing...
 
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