Oil Pressure Troubles.

Capocaccia

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• Aug 9, 2006

• #1

I have a 96 LX450 with 127k miles. For the longest time I was getting great oil pressure and not having a problem. Now, I cant seem to much oil pressure. It could have something to do with it being 100+ degrees here daily but I was just wondering if I need to check into a more serious problem. Usually after I run it for 5-10 minutes I get some but not a good amount of pressure. Im running 10W30. If anyone has any suggestions to look into that would be great.

 

P

psfpilot

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• Aug 9, 2006

• #2

It would be helpful if you could post up with specifics about precisely where on the gauge face your needle is loitering under idle and partial throttle.

I am using 5w-40 Shell Rotella T Synthetic, and ambient temperatures right now are ~90*F. The idle oil pressure when the motor is at operating temperature is about two needle widths below the lower of the two middle marks on the gauge. At partial throttle it is at least two needle widths above this same mark.

 

Last edited: Aug 9, 2006

Capocaccia

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• Aug 9, 2006

• Thread starter
• #3

Well at best when im idling its at the very lower line and I cant get it about the first of the two middle lines.

 

corsair23

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• Aug 9, 2006

• #4

Could just be a bad guage but I'd get it checked before you cause any serious damage if your oil pressure is indeed that low...

 

Tapage

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• Aug 9, 2006

• #5

maybe is a nice idea go with 20W-50 .. for those HI temps ..

 

Tools R Us

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• Aug 9, 2006

• #6

When I got mine (July, AZ, so 100F+) it had 5w-30 and showed the same gauge readings that your showing. I wasn't happy with those reading and did a little research, now go by the AU oil recommendation with much better results.

AU viscosity from Andrew at 80s cool
1fzfe motor
20w50 oil- -7 deg to 38 plus ; 19 f to 100 f
15w40 oil -10 deg to 38 plus; 14 f to 100 f
10w30 oil -18 to +38 deg; 0 f;to;100 f
5w30 -30 to 8 deg celcius ; -22 f to 46 f

 

Last edited: Aug 9, 2006

Bruneti

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• Aug 9, 2006

• #7

My '96 LX has the same oil pressure readings with 10W-30 in high ambient temperatures after it warms up. I plan on switching to 5W-40 or 0W-40 at the next oil change. I believe most have seen higher oil pressure and less consumption after switching to a higher oil viscosity. The oil faq has good info and talks about the U.S. oil recommendations being made based on increased fuel economy with lower viscosity.

 

landtank

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• Aug 9, 2006

• #8

i had low oil pressure when my truck was running hot. Others have noticed the same thing. After getting that under control my pressure at idle is halfwat between the lowest mark and the bottom one of the 2 middle ones.