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Chevy/GMC Duramax 04.5-05 LLY Discussion of Chevy and GMC Trucks with LLY Duramax Turbo Diesel Engines

whats the normal operatring oil presure for my dually? Is there a diffrence in pressure between gas and diesel engines? I only ask becasue it really fluccuates(sp) alot. Normal driving is right around 20 and when I get up on it it jumps up to ... JOIN NOW TO REMOVE TRACER

Oil Pressure?

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Old 07-19-2008, 03:17 AM
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Default Oil Pressure?

whats the normal operatring oil presure for my dually? Is there a diffrence in pressure between gas and diesel engines? I only ask becasue it really fluccuates(sp) alot. Normal driving is right around 20 and when I get up on it it jumps up to about 60 when im idiling its at around 10 or so. Is this normal?

My 6.0 2500HD has always been a constant 60 from the day I bought it and ive always assumed this was normal.

Thanks in advance!!

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Old 07-19-2008, 04:08 AM
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im not real sure with the DMAX's but that seems kinda low, i wouldnt think it should drop down to ten. What weight oil are you running.

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Old 07-19-2008, 12:30 PM
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yes that is normal for the dmax it doesn't really need much oil pressure it is a little hard to get use to but it is normal every dmax i have been in has been that way

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Old 07-19-2008, 12:47 PM
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Originally Posted by jdugie123 View Post
yes that is normal for the dmax it doesn't really need much oil pressure it is a little hard to get use to but it is normal every dmax i have been in has been that way
ok cool! Yea it worried me a little the way it moves around so much

---AutoMerged DoublePost---

Originally Posted by stkdram55 View Post
im not real sure with the DMAX's but that seems kinda low, i wouldnt think it should drop down to ten. What weight oil are you running.
Haha I have yet to change the oil since i bought it from the dealer. What would you recomend?

Last edited by JS2TZU; 07-19-2008 at 12:47 PM. Reason: Automerged Doublepost
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Old 07-19-2008, 01:08 PM
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i dont know about Dmaxs but everytime im in the ford work tractor the oil pressure goes up as the throttle increases. i aways assumed that as the engine worked harder the more oil it needed

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Old 07-19-2008, 02:05 PM
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Originally Posted by jdugie123 View Post
yes that is normal for the dmax it doesn't really need much oil pressure it is a little hard to get use to but it is normal every dmax i have been in has been that way

wouldn't be normal for me

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Old 07-21-2008, 10:01 PM
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Yep, it's normal for LLY and up. Right now I'm towing 14000#, doing 65mph, 1800rpm and showing 40psi. High volume/low pessure.

As for oil: Delco PF2232 oil filter and regular Delo400 for me, others will say what they like, I'm sure.

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Old 07-21-2008, 10:29 PM
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Originally Posted by Rttoys View Post
Yep, it's normal for LLY and up. Right now I'm towing 14000#, doing 65mph, 1800rpm and showing 40psi. High volume/low pessure.

As for oil: Delco PF2232 oil filter and regular Delo400 for me, others will say what they like, I'm sure.

i think ill call u mr.delco.


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Old 07-22-2008, 12:23 PM
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well the pressure is always up if you never lift off the throttle hahaha
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