opinion on motor oil

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gerald
440 crawler
440 crawler
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Joined: Fri Aug 13, 2010 9:32 am
Location: elephant Butt nm

opinion on motor oil

Post by gerald » Wed Mar 02, 2011 7:31 am

Befor I got service manual. I bought 6 gallons 15 /40 motor oil for diesel engine, service manual calls for 30 weight oil . Should I use 30 weight ?
1970 350 crawer/loader 93a back hoe
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digitup2
350 crawler
350 crawler
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Joined: Tue Feb 05, 2008 6:36 pm

Post by digitup2 » Wed Mar 02, 2011 2:02 pm

The multigrade should do as good watch your oil pressure cold and warm an older motor should work as good on 15/40 as sae 30 .There should actually be no difference in oil pressure from one to the other .The big thing is the newer oils have more additives that is all .Digitup.
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shinnery
350 crawler
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Joined: Fri Jan 27, 2006 4:55 pm
Location: Hawley, Texas

Post by shinnery » Wed Mar 02, 2011 2:25 pm

AFAIK The only engine that really requires 30W or 40W oil is the 2-53 Detroit in the 440ICDs, most others will be fine on 15/40W oil.
Bryce
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