On chapter 6 of the motor oil university called "Personal preference" it says that No conventional Xx-w50 oils are reccomended because apparently they are all too thick at startup, does this refer to Straight 50 weight oils? 20w50 oils? , if it does refer to 20w50's for example this sounds pretty ridiculous to me since it seem to claim that they are too thick regardless of the application or anything else.
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