My former fire truck is equipped with a Caterpillar 3208 T. I get it most of you are making that hissing sound. It ain't a first choice engine. It is low hour, pumped 615 hours, likely travelled 10,000 miles. It runs at near 100PSIG on the highway, at idle, it's over 50. Is this a concern? I do wonder if it should be somehow regulated. Will it blow a hose?
3208's can really vary on oil pressure, spec's range anywhere from 35 idle to 100 full tilt. I worked on one that would peg the gauge at full throttle 100 and idled at 25. I wouldn't worry.
Thank you. I was a bit concerned something was blocking flow.
Well if something was blocking flow-it would have a picture window in the side of the block by now.
Most engines have a pressure relief valve of some sort.
I had four of them at one place I worked. I had plenty of other problems with the trucks and worrying about oil pressure was never even mentioned by the drivers. All had at least 75 PSI at high idle.
None that I've noticed.
I dont understand but like the 3208 alot of engines did there job and did it well but even the the best engines have haters. I sleep better when the oil presser gauge dosent work.
OK, you have a point. My neighbor 50 years ago had a 1953 Jeep CJ3B (tall flat hood) It had an F head 131 engine. Half the valves were in the block, half were in the head. Horsepower ratings were something like 60. Oil pressure gauge read zero. Local garage owner said, " If you had no oil pressure, it'd seize." He drove it that way another 10 years.
I have a case 1830 skid steer one of the best things i ever bought. It was setting on a dealers lot i went and run it the oil presser gauge is down under the front of the seat. I started it up bent over the gauge was on 40 psi. I got it home and weeks later i went to get in it and happen to look at the gauge it has 40 psi even when its not running.
I personally like a functioning oil pressure gauge and would not run an engine without one. If in doubt, check the pressure with a master gauge to compare