Suburban 2500 LS

[Tkrysl]

Morning Gents,

Someone on facebook 3/4 ton group pointed out my high oil pressure. Shamefully, I never noticed it. This is sitting idle. It is almost 80PSI when throttled down.

Normal for a 170K 6.0L?

Something to worry about?

Thanks,

 

[MINIz guy]

Is it extremely cold or are you running thick oil? I see coolant is up to temp, but the transmission isn't, so I'm assuming the oil isn't either.

When cold, my idle oil pressure is ~55psi. It drops to 45psi when hot, after 25 minutes of driving. I have Quaker State 5W-30 synthetic blend in mine

 

[Tkrysl]

Is it extremely cold or are you running thick oil? I see coolant is up to temp, but the transmission isn't, so I'm assuming the oil isn't either.

When cold, my idle oil pressure is ~55psi. It drops to 45psi when hot, after 25 minutes of driving. I have Quaker State 5W-30 synthetic blend in mine

Neither. Was 58degrees and I run Mobil one 5w30


I don't always venture out into the sub-freezing darkness, but when I do, it is hunting season, and I carry a Remington. Stay hungry my friends.

 

[Tkrysl]

Cranked the t bars up 2", removed the running boards, and put on 285s.