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Author Topic: 91 c1500  (Read 2455 times)

Offline dumbucket1

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91 c1500
« on: July 12, 2009, 05:44:50 pm »
It has a 305 with 194k miles on it. Fresh 10w30 conventional oil with acdelco filter. Is 6psi oil pressure at hot idle in gear with foot on the brake acceptable? I ask because it trips the check gauges light. I hooked up a mechanical gauge at the port by the oil filter to verify the pressure.
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Chevy and GMC trucks ranging from 1973 to 2007

Offline zieg85

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Re: 91 c1500
« Reply #1 on: July 12, 2009, 05:59:52 pm »
Low yes, but I have had some old SB engines have 5 psi at idle when hot and last for years with no problems.  Just keep an eye on the oil level and with almost 200K on it 10W-40 probably wouldn't hurt you either... My $.02
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Carl 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
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Offline dumbucket1

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Re: 91 c1500
« Reply #2 on: July 12, 2009, 06:18:28 pm »
Thats pretty well what i figured. May just take that bulb out that lights up that check gauges message.
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Chevy and GMC trucks ranging from 1973 to 2007

Offline VileZambonie

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Re: 91 c1500
« Reply #3 on: July 12, 2009, 06:35:40 pm »
If you verified it, its tired. Run 20w50
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Offline zieg85

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Re: 91 c1500
« Reply #4 on: July 12, 2009, 08:46:30 pm »
I would just live with the light, it may sometime come on if you say overheat and you are going down the road.  Again, My $.02   
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Carl 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
https://www.facebook.com/groups/248658382003506/
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