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+--- Thread: Cm2250 oil pressure numbers??? (/showthread.php?tid=629)
RE: Cm2250 oil pressure numbers??? - overshot - 07-16-2016
(07-16-2016 )jimeneztrans84 Wrote: How long have you been with current psi?about a month or so. since the outside temps started getting hotter.
RE: Cm2250 oil pressure numbers??? - simon999 - 07-16-2016
On my 2350 oil pressure at 650rpm is 25psi, when driving 40-42psi. If you idle your truck always raise rpm atleast 850rpm, this will raise oil pressure to valve cam.
RE: Cm2250 oil pressure numbers??? - overshot - 07-16-2016
(07-16-2016 )simon999 Wrote: On my 2350 oil pressure at 650rpm is 25psi, when driving 40-42psi. If you idle your truck always raise rpm atleast 850rpm, this will raise oil pressure to valve cam.good point!!!!
RE: Cm2250 oil pressure numbers??? - snailexpress - 07-17-2016
(07-16-2016 )simon999 Wrote: On my 2350 oil pressure at 650rpm is 25psi, when driving 40-42psi. If you idle your truck always raise rpm atleast 850rpm, this will raise oil pressure to valve cam.
Plus by Cummins recommendation will produce less soot.
RE: Cm2250 oil pressure numbers??? - Rawze - 07-17-2016
15 PSI is the bare minimum required oil pressure at idle from my understanding. Personally, I would like to see it up at 18+ at idle and that is what it is on my CM871.
I do run a gallon of gear lube though too, and that helps it a lot in this regard, especially in hotter weather. It is also why I use a gallon of 85/140 instead of 80/90 in the mid summer months.
RE: Cm2250 oil pressure numbers??? - Unilevers - 07-17-2016
holy shi#t guys, anything below 20psi hot idle is scary.
it is not supposed to be that low.
RE: Cm2250 oil pressure numbers??? - jimeneztrans84 - 07-17-2016
Which type of gear lube do you use rawze? And what is the gear lube supposed to do?
RE: Cm2250 oil pressure numbers??? - Waterloo - 07-17-2016
(07-17-2016 )jimeneztrans84 Wrote: Which type of gear lube do you use rawze? And what is the gear lube supposed to do?
Sta-Lube, GL4, CM-871 and older motors.
On the newer trucks with SCR systems a GL5 gear oil is recommended.
Here is what Rawze and many of us use in our CM-871 and older motors... https://www.amazon.com/Sta-Lube-SL24239-GL-4-Multi-Purpose-Hypoid/dp/B000M8RYMC/ref=sr_1_1?ie=UTF8&qid=1468774578&sr=8-1&keywords=stalube
You can find this at most NAPA stores... Watch for it as it is on sale now at NAPA. https://www.napaonline.com/napa/en/p/SLRSL24239/SLRSL24239
Here is the GL5 on sale too at NAPA https://www.napaonline.com/napa/en/p/SLRSL2473/SLRSL2473
Sometimes Amazon is cheaper and other times NAPA... I just order off of Amazon, two gallons at a time.
I use one gallon at every oil change, this is in a freshly in framed motor. It has the extra additives that keep our motors happy, and helps coat the surfaces, especially in the head.
RE: Cm2250 oil pressure numbers??? - jimeneztrans84 - 07-17-2016
Can I start adding this on a 2011 cm2250 with 501,000 miles? Would it help it or only on freshly inframed motors?