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low oil presure

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Original source
10 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHlow oil presure

Leading reported evidence

Use 15w50

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed · Original poster

I am using 15W50 to top it off.

low oil presure
Frequently discussed work

Use 0w40

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

However, under most circumstances I would advocate using 0W40, which is also what's being used by the factory.

low oil presure
Read full discussion summary

Leading evidence: 'Use 15w50' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Use 0w40' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.

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1 matching discussions · 10 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Use about a half a quart in 9k miles

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed

My '02 used about a half a quart in 9K miles.

low oil presure

Use 0w40

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

However, under most circumstances I would advocate using 0W40, which is also what's being used by the factory.

low oil presure

Use by the factory

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

However, under most circumstances I would advocate using 0W40, which is also what's being used by the factory.

low oil presure

Use mobil 1 0w40 not 15w50

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

I don't know if it's significant in any way, but my '02 cab uses Mobil 1 0W40 not 15W50.

low oil presure
Frequently discussed actions (5)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Use 0w40

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

However, under most circumstances I would advocate using 0W40, which is also what's being used by the factory.

low oil presure

Use 15w50

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed · Original poster

I am using 15W50 to top it off.

low oil presure

Use about a half a quart in 9k miles

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed

My '02 used about a half a quart in 9K miles.

low oil presure

Use by the factory

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

However, under most circumstances I would advocate using 0W40, which is also what's being used by the factory.

low oil presure

Use mobil 1 0w40 not 15w50

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

I don't know if it's significant in any way, but my '02 cab uses Mobil 1 0W40 not 15W50.

low oil presure
Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

10 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • Rennlist: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261027T003124Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

After I drive at highway speed for several hours and then stop for any reason allowing the engine to idle the oil pressure will fall to below the 1 bar line and the oil warning buzzer goes off and the oil pressure light will come on. Not a 'nice' behavior in my mind. I watch the oil level very carefully and keep it on or slightly below the full indicator. I am using 15W50 to top it off. At speed the oil pressure will run at 4-5 bars and blipping the throttle from idle allows the pressure to pick up as expected. The owner's manual has ugly warning about low pressure and I must admit that I am concerned. 2002 cab with 21000 miles. I have mentioned this to the dealer and they do not seemed overly concerned. I am interested in the boards comments.

POST 2Original post

How often do you top-off and do you know of any oil leaks?

POST 3 / ORIGINAL POSTEROriginal post

I top off when ever it is down 1/3 of a quart. Every two weeks or so. After two week of cardboard under the car, I had no indication of any oil seepage. And I drive the car most every day

POST 4Original post

oil warning buzzer and oil pressure light coming on. dealer says not concerned! Wow! I would get that in writing......very quick.

POST 5 / ORIGINAL POSTEROriginal post

well, perhaps I exagerated the dealer's lack of concern. It was more, 'bring it in some time and we will take a look at it'. Definately not, shut it off and have it towed.

POST 6Original post

Although our driving habits are different, my impression is that you are using a lot of oil if you are adding every two weeks. My '02 used about a half a quart in 9K miles.

POST 7Original post

I would be off the phone and on my way. Pronto!

POST 8Original post

yeah, topping off your oil every two weeks is a problem. i used to have a problem on a VW i owned where the oil pressure light would only come on after several hours of highway driving, but if you stopped, no oil actually ever dripped off of the car. there was some on the engine block though. i took it apart and found that the head gasket was coming apart! i bet you have an oil leak due to a bad seal somewhere. i'd have that car in the dealer today if i were you.

POST 9Original post

I don't know if it's significant in any way, but my '02 cab uses Mobil 1 0W40 not 15W50. Is there a major difference?

POST 10Original post

Yes, you'd expect oil pressure to be slightly higher with 15W50. However, under most circumstances I would advocate using 0W40, which is also what's being used by the factory. Cheers, Uwe

This is a source reference. Confirm exact model applicability in the original material.