jakerz Posted January 3, 2007 Report Share Posted January 3, 2007 i searched around a bit and didnt find anything that REALLY answered the question that i have. i bought my truck a couple months back and just did its first oil change. i chose mobil 1 5w-30 full syn. combined with a mobil 1 filter. after install i let it idle for a while and then drove it around town. at idle the truck sits at 40lbs of pressure. and when i gave it wot it jumped (and maxed out) at 80lbs. btw this is in 32-40 deg. weather. after this i pulled over and checked my oil and realized it was quart low. (should have read the manual). could this be the issue?? or is there no issue at all? i never payed attention to the oil pressure gauge before. 1 MORE THING- since i am a quart low, would it be "GOOD" to use slick 50 to replace the quart, or just go ahead and use another quart of mobil 1? thanks guys! Quote Link to comment Share on other sites More sharing options...
H8R Posted January 3, 2007 Report Share Posted January 3, 2007 6qts Mobil1 man... Every oil change... Very Simple. I Dont see the problem. Thats good oil pressure, unless the gauge is wrong. Quote Link to comment Share on other sites More sharing options...
pimp ss Posted January 3, 2007 Report Share Posted January 3, 2007 When my oil pressure gauge was hitting 80 psi the dealership replaced my whole gauge cluster under warranty while they were replacing my front diff just cost me my 100 dollar deductible. Quote Link to comment Share on other sites More sharing options...
misterp Posted January 3, 2007 Report Share Posted January 3, 2007 I see the same behavior, and I use Mobile-1 0W-30 but 5W-30 will do the same thing. Mr. P. Quote Link to comment Share on other sites More sharing options...
H8R Posted January 3, 2007 Report Share Posted January 3, 2007 I use 10 w 30 maybe thats why I haven't seen it. That is weird how the gauge does that! Quote Link to comment Share on other sites More sharing options...
rivierakid55 Posted January 3, 2007 Report Share Posted January 3, 2007 not an expert on oil viscosity and such but i dont think that 5-30 or 10-30 is going to make the oil pressure change that much at all. on a side note, im not in the habit of looking down at my cluster when im going 70 in second gear like mr. p. i might have 80psi too. Quote Link to comment Share on other sites More sharing options...
misterp Posted January 3, 2007 Report Share Posted January 3, 2007 on a side note, im not in the habit of looking down at my cluster when im going 70 in second gear like mr. p. i might have 80psi too. That's right I don't even look out the front window, I just concentrate on the tach - the tach tells me how I'm doing! Mr. P. Quote Link to comment Share on other sites More sharing options...
jakerz Posted January 4, 2007 Author Report Share Posted January 4, 2007 well at least im not the only one. i was kinda worried there. what about running the slick 50 for the quart i'm missing?? or should i just go ahead and put in another quart of mobil one?? Quote Link to comment Share on other sites More sharing options...
montanass Posted January 4, 2007 Report Share Posted January 4, 2007 that seems like normal oil pressure to me... mine does the same thing not an expert on oil viscosity and such but i dont think that 5-30 or 10-30 is going to make the oil pressure change that much at all. It can make a difference.... I changed the oil in a 96 chevy 5.7L, and i went from a 5-30 to a 10-40 and the oil pressure dropped from 40psi at idle to around 20psi, it also resolved the lifter knock the engine developed after 160,000 miles Quote Link to comment Share on other sites More sharing options...
CoolBlueSS Posted January 4, 2007 Report Share Posted January 4, 2007 well at least im not the only one. i was kinda worried there. what about running the slick 50 for the quart i'm missing?? or should i just go ahead and put in another quart of mobil one?? <{POST_SNAPBACK}> Just put in another quart of Mobil 1. Don't mess with Slick 50. I may get flamed, but it seems that it is more harmful than good, in my experience. Quote Link to comment Share on other sites More sharing options...
CoolBlueSS Posted January 4, 2007 Report Share Posted January 4, 2007 on a side note, im not in the habit of looking down at my cluster when im going 70 in second gear like mr. p. i might have 80psi too. That's right I don't even look out the front window, I just concentrate on the tach - the tach tells me how I'm doing! Mr. P. <{POST_SNAPBACK}> What a wacky guy. Quote Link to comment Share on other sites More sharing options...
shakesvho Posted January 4, 2007 Report Share Posted January 4, 2007 on a side note, im not in the habit of looking down at my cluster when im going 70 in second gear like mr. p. i might have 80psi too. <{POST_SNAPBACK}> plus, a snap shot Quote Link to comment Share on other sites More sharing options...
Badkarma Posted January 5, 2007 Report Share Posted January 5, 2007 Just top it off with Mobile 1. Use quality motor oil and stay away from snake oil additives. Just my two cents worth Quote Link to comment Share on other sites More sharing options...
jakerz Posted January 6, 2007 Author Report Share Posted January 6, 2007 will do!! thanks for the help guys!! Quote Link to comment Share on other sites More sharing options...
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