I was wondering if anyone had any opinions on this stuff. I just bought 4 gallons @ 8.50 a gallon on sale at wally world with a motorcraft filter. First oil change since I bought this truck so i thought i'd give it a whirl and see how it likes it.
dont be surprised if it runs rough if its had something else in it.
dont get me wrong i think delo is top quality oil as well as rotella
ive run rotella for 95,000 miles & decided to switch to delo 400 & when i started the truck it ran rough so i drove about 20 miles thinking it would clear up & it didnt so i dumped it out & put rotella back in & changed filter too. that was an expensive oil change. after i did that it ran fine.
same thing happen to a buddy of mine but he was using delo & did an oil chainge with moble delvac 1300 & his did the same thing.
maybe we are just sensitive to how our trucks run.
but to answer your question delo 400 is good oil.
hope this helps
its also factory filled in peterbilt trucks
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2002,7.3L,6sp,cc,lb,xmonitor,1705,zoodad,AFEstg2, wicked wheel,hpx ss line,straight pipe,325/65r18 mtz,kmc 18x10,6.5"procomp lift & track bars,firestone bags,viair 480,5g tank,train horns,70g transfer tank,leer shell,12k warn & hidden bumper kit,05-07 H-D headlights,35W 5K HIDs in head/fogs
Last edited by chillls; 08-08-2010 at 01:53 PM.