Dodge B-I-B 1948 Driver Manual page 15

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LUBRICATION
LUBRICATION
The present day commercial vehicles perform an entirely different
type of service from that of a short time past. Higher speeds are
developed and longer distances are traveled in shorter time. This
type of performance demands very exacting lubrication. The
necessary mechanical changes have brought about the necessity
for a variety of lubricants to take care of the lubrication require-
ments adequately.
Proper lubrication is of vital importance to you in the economical
operation of your truck. We urge you to read carefully +he follow-
ing paragraphs concerning this subject and study the lubrication
charts on pages 17 to 22, inclusive, so you will know just what the
lubrication requirements are for your truck.
ENGINE OIL RECOMMENDA
nONS
The engine oil recommendations given in the lubrication chart,
page 17, are based upon the principle that the lower viscosity oils
circulate more rapi dly and lubricate parts with closer clearances
more readily than the heavier oils. Their complete satisfaction, how-
ever, depends upon the use of only well refined or high quality
product,s. Purchases should be made, therefore, only from reputable
manufacturers or dealers.
For sub-normal winter conditions such as temperatures below
-10° F., the No.1 0- W should be diluted with about 10% colorless
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