Start up oil pressure, takes too long for the low pressure light to go out?

What about oil filter? Oil filter has a flapper valve that retains oil in all engine upper ducts, in order to get oil pressure quickly after start. I suggest to do 2 tests: after this long time with no pressure, to stop engine immediately and after 5 minutes to test it again. If time is shorter, then You can do second test: to change filter (always the best branded quality), and test again. I hope this is the only issue. I suffered this trouble once with my TDI, and it was oil filter

Regards
 

terryjm1

Well-known member
Jan 23, 2011
894
168
It has a wix oil filter which I believe is a good quality one. I will change the oil and filter when I get back from a trip next week. My D1 with 300tdi builds oil pressure almost immediately regardless of temperature. I’m pretty sure I have a Mahle filter on it.
 

robbyb20

Well-known member
Oct 2, 2019
180
22
Seattle
Speaking of filters, had on wix filters for about 2 years, had a K&n one on previously and now have a mobil one filter on. I just changed out the 15w40 for 10w30. Will have to wait till tomorrow to see what what its like since I changed it after gettting the engine up to about 100f. On restart after the change, the light went off instantly but I suspect it being at that temp helped it move a bit faster.
 

Blueboy

Well-known member
Apr 20, 2004
3,011
356
Back in the USA; Rockwood, PA
It has a wix oil filter which I believe is a good quality one. I will change the oil and filter when I get back from a trip next week. My D1 with 300tdi builds oil pressure almost immediately regardless of temperature. I’m pretty sure I have a Mahle filter on it.
On oil filters I will always remember Mike Smith from East Coast Rover telling me only use a landy Rover oil filter. He was working on my ‘95 D90 and ‘93 LWB Rangie at the time. Feel sure they have it made for them yet always have followed his advice. That was in 1996.
 

Flyfish

Well-known member
Oct 29, 2004
1,355
192
50
St. Louis
It has a wix oil filter which I believe is a good quality one. I will change the oil and filter when I get back from a trip next week. My D1 with 300tdi builds oil pressure almost immediately regardless of temperature. I’m pretty sure I have a Mahle filter on it.
I think GG’s oil filter comment was more so diesel oriented. But from what tests I’ve seen, WIX is pretty solid. That’s what I use on everything.
 
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There is no difference between diesel or Petrol with this thing. Pressure indicator ligths go off with less to 5 psi. But if there is no oil in ducts it takes a lot of time to fill them, and reach these 2 or 3 psi enough to get indicator light off. Diesel and petrol oil filters have the same 2 valves inside: pressure output flapper and bypass (just in case filter goes clogged). Here http://www.landroverclub.com.ar/viewtopic.php?nomobile=1&f=10&t=155907 you can see inside filter parts. This black soft part (third from bottom) closes peripheral input holes avoiding oil pumped inside to return when stopped. If this part is not tight, then oil will drain.
Here are Fram and Wix filters the worsest quality you can find.

Regards
 
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robbyb20

Well-known member
Oct 2, 2019
180
22
Seattle
Anyone have a recommendation on an oil pressure gauge with the correct fitting OR the size of the oil pressure sender fitting so I put something together? The lighter oil sped up (5seconds 30s weather) but now its a bit noisier on initial startup. once warmed up its good though. May as well get some more data though.
 

discostew

Well-known member
Sep 14, 2010
7,141
803
Northern Illinois
What about oil filter? Oil filter has a flapper valve that retains oil in all engine upper ducts, in order to get oil pressure quickly after start. I suggest to do 2 tests: after this long time with no pressure, to stop engine immediately and after 5 minutes to test it again. If time is shorter, then You can do second test: to change filter (always the best branded quality), and test again. I hope this is the only issue. I suffered this trouble once with my TDI, and it was oil filter

Regards
This is what I’ve been thinking. What oil filer are you running?
 

discostew

Well-known member
Sep 14, 2010
7,141
803
Northern Illinois
Anyone have a recommendation on an oil pressure gauge with the correct fitting OR the size of the oil pressure sender fitting so I put something together? The lighter oil sped up (5seconds 30s weather) but now its a bit noisier on initial startup. once warmed up its good though. May as well get some more data though.
It’s a goofy size. I can’t remember. I’ve used an adapter that goes on in place of the oil filter before. It was a great tool that a friend had. If you find one post it up, I would buy one.
 

Disco95

Active member
Mar 20, 2020
28
5
Portland, OR
It’s a goofy size. I can’t remember. I’ve used an adapter that goes on in place of the oil filter before. It was a great tool that a friend had. If you find one post it up, I would buy one.
I used a sandwich adapter to hook up a mechanical gauge. Haven't plumbed one permanently.


Cheers,
joe b
pdx or
 
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discostew

Well-known member
Sep 14, 2010
7,141
803
Northern Illinois
Similar behavior as OP and others, I've been running the black Mahle OEMs. Maybe it's worth trying something different...

Cheers,
joe b
pdx or
You can usually see the check valve. It’s worth a shot to at least to inspect it. If the filter allows oil to leak down it would act like your describing