96dragshee
09-25-2004, 04:51 PM
Should I be concerned about oil pressure reading on the low side at idle? Is this a common thing with the duramax?
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Kartattack 09-25-2004, 05:39 PM Define low. Mine with conventional oil will have about 25 PSI at idle when warm according to the gauge. JMERIK1 09-25-2004, 06:27 PM Mine also stays in the 30 psi range, 50-60 at speed. Even at higher speeds. 2004 LLY. k1xv 09-25-2004, 07:13 PM Mine is around 25 psi at idle when warm with 5w-40 Shell Rotella synthetic on a 75 degree day. 96dragshee 09-25-2004, 07:56 PM Thats where mine is at according to the gauge,that's what I wanted to know.Thanks! problemchild 09-25-2004, 08:36 PM mine is 9-18 lbs hot idle jonb 09-26-2004, 12:35 AM It's the alignment of your planets, PC... GMC2500HD 09-26-2004, 01:01 AM Mine usually gets into that range... Might be time to go back to regular from synthetic.. Not sure if that is causing it... DIESEL 5 09-26-2004, 01:19 AM Mine is at 9-15 lb hot as well http://www.dieselplace.com/forum/smileys/Confused.gif GMC2500HD 09-26-2004, 01:23 AM Diesel 5, are you running synthetic in yours? If so what kind? DIESEL 5 09-26-2004, 02:05 AM delvac 1 problemchild 09-26-2004, 04:10 AM wow havent seen d5 around lately DIESEL 5 09-26-2004, 12:01 PM PC, I was just too busy here at the shop.....the season is just about over, so I will have more time to play now. http://www.dieselplace.com/forum/smileys/Big Smile.gif Mike L be ready cause I got a long list of new mods http://www.dieselplace.com/forum/smileys/Clown.gif Is the new turbo out yet????????? http://www.dieselplace.com/forum/smileys/Embarrased.gif Back on topic: My oil pressure always been low in hot idle, I have changed the sending unit + new instrument cluster........and its still low http://dieselplace.com/forum/smileys/Ermm.gif GMC2500HD 09-26-2004, 01:37 PM Well mine runs low all the time. Talked to dealer about it and they told me as long as it does not bottom out it is ok.. hmmm..http://www.dieselplace.com/forum/smileys/Ermm.gif k1xv 09-26-2004, 08:37 PM I know its comparing apples and oranges, but I have a 1981 turbo Mercedes diesel 3.0 liter, and the owners manual says idle oil pressure as low as 0.5 bar (that's 7.5 psi) is acceptable. I normally see about 1.3 bar (about 20 psi) at idle when the engine is hot. At idle, so long as oil is flowing everywhere it should, 20 psi or so should be no problem I would think. 4x4man 09-27-2004, 08:51 AM I am running 20-25 psi at idle with Schaeffer's 15w-40 synthetic blend. GMC2500HD 09-27-2004, 02:06 PM Mine was acutally weird today, runs high always until it gets warm then seems to come down, well today it never came down stayed over 60 psi the whole drive this morning and back home, even at idle...hmmm Edited by: GMC2500HD k1xv 09-27-2004, 07:54 PM Mine was acutally weird today, runs high always until it gets warm then seems to come down, well today it never came down stayed over 60 psi the whole drive this morning and back home, even at idle...hmmm Now that would concern me. A lot. DIESEL 5 09-27-2004, 08:30 PM Mine was acutally weird today, runs high always until it gets warm then seems to come down, well today it never came down stayed over 60 psi the whole drive this morning and back home, even at idle...hmmm Now that would concern me. A lot. Its probably a bad O/P gage.....mine did the same thing before I changed it. I get my true oil pressure reading from my X-Monitor http://www.dieselplace.com/forum/smileys/Geek.gif | ||