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U can use any well known xW-20 or 30 oil in the van.
Your Ram would love a xW-40 HDEO. (Heavy Duty Engine Oil,big rig diesel oil)
like Rotella, Delo, Delvac..etc
 

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His sign says 1983...so i still recomend hdeo.
But as you stated- its not for mds hemis.
I wonder how many of these who have gotten standard oil
at the quick lube place?
Im also curios about this talk that modern engines have smaller
clearances- do they really have smaller clearances not just smaller tolerances?
 

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Yes, they have both smaller tolerances and smaller clearances. Not much smaller, but enough.
Googled some numbers, not really sure how true they are but:
318 crank play: 0,0005-0,0015 rod play: 0,002-0,0022
5.7 3gH crank play: 0,0009-0,002 rod play: 0,009-0,002

Both bigger and smaller but pretty much in the same ball park.
I wonder if a non 0W-20 SRT hemi have diffrent clearances?
 
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