| Oil Pressure Woes [message #370312] |
Mon, 08 August 2022 07:30  |
traveler1980
Messages: 24
Registered: September 2019
Location: Gettysburg, PA
Karma:
|
Junior Member |
|
|
Hi All - hoping the collective brain trust here can provide some thoughts on some oil pressure concerns I have with my coach. I have owned my coach for about 3 years and was told by the PO (and shown paperwork) that the engine had been replaced. The paperwork indeed showed an engine swap, but mentioned nothing about the actual engine being installed. PO said it was rebuilt. Here are some observations I've had with my oil pressure -
- Engine now has about 10,000 miles on it. I camp locally and we don't drive very far.
- At start, pressure is about 40-45 PSI
- At hot idle, pressure is about 15 - 20
- Driving, pressure is as low as about 7 at a stop light, but will get up to anywhere between 20 and 30 at ~2500 RPM
- I run Rotella T4 15W40 and change the oil annually or every 3k miles (but never drive that much in a season).
- No rattles, thumps or other suspicious engine noise.
- All readings were confirmed with a cheap mechanical pressure gauge.
Given these oil pressure readings, I am seriously wondering about the "new" engine. Maybe it was a swap and not a rebuild, or perhaps it was a partial rebuild and the bearings were never replaced (??). In any case, I am wondering if I should try 20/50 oil to bring up the pressure. I know that flow will be reduced, but I am concerned about top end lubrication at 7 PSI. I ofter put the tranny in neutral just to bring it up at stop lights.
Thoughts?
Jamie Sharp
South Central PA (Gettysburg area)
'76 Palm Beach, AKA "Grumble"
[Updated on: Mon, 08 August 2022 07:31] Report message to a moderator |
|
|
|
GMCforum
Search
Help
Register
Login
Home
