Are peoples still doing 5w30 for winter and 10w30

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I use to use multi-wieghts in winter. straight-wieghts in summer. I found bitog and went to 15w-40 or 20w-50 summer.
now i have been using 5w-20 in most everything but the 84 ford 1.5ton econoline.
the econo has 460 c6. Class C 28ft Honey brand motorhome. 84k on clock. real speed. ask any trucker, it's not 0-60 that rules its 40-70. I use rotella 15w-40.

Ken
 
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