Oil for high mile engine

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AyeAyeCapn

Junior Member
Joined
Oct 3, 2016
Posts
9
Reaction score
1
Ram Year
2004 1500 Quadcab
Engine
3.7
Recently got a deal on a 2004 1500 with a 3.7 5-speed manual, but, 306,000 miles. My other vehicle is a '99 Ranger 4.0 with 478,000+ miles. I went to 20-50 when Ranger was about 350,000. The tolerances (gaps!) have to be way bigger than factory dimensions - what do you think should run in the 2004 300K+ 3.7? I'm inclined to go to 20-40 or 20-50 - appreciate your thoughts, experience and advice.
 
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