Oil pressure normal after oil change

AndySilverado · February 25, 2025

On 2/22/2025 at 10:20 PM, newdude said:

If you are only going 2000mi before the low oil pressure light comes on, something is going on. Filter is getting restricted and its bypassing, oil pickup tube is failing, oil pump is weak, etc.

Have you tried running the UPF-48R or UPF-63R filters? If not, what filter are you using?

I have a shop do it because it’s so convenient. This last time was LOF. They installed a Parts Master 67060.
https://www.amazon.com/Parts-Master-67060-Oil-Filter/dp/B0094IO7P8

davester · February 25, 2025

"parts master"?

Did you ask them to install the cheapest filter they could find?

Try using good filters. Probably should consider a better oil as well.

newdude · February 25, 2025

11 hours ago, AndySilverado said:

I have a shop do it because it’s so convenient. This last time was LOF. They installed a Parts Master 67060.
https://www.amazon.com/Parts-Master-67060-Oil-Filter/dp/B0094IO7P8

Yea, I'd start with a better filter first. AC Delco PF63, AC Delco UPF48R or UPF63R, Wix WL10255.

Grumpy Bear · February 25, 2025

On 2/22/2025 at 9:18 AM, AndySilverado said:

For how many miles/hours after your oil change with that filter does the problem go away? My 2010 Silverado 1500 does the same thing. An oil change every ~2,000 miles fixes my low pressure. If I try going longer, the low pressure returns. I just did my third “short interval” oil change because of that issue and what fixes it.

Just tossing this out there. Most Big Box Store oils are not shear stable and within the period of time you state will shear down about 1 SAE grade. Maybe more if the tune is a bit off or GDI is in play where fuel dilution is also a factor on higher milers.

While you might not be able to see it on a dash gauge the sensor that feeds the MIL/ECM does. If the motor is a higher miler a little is enough. Early in life when clearances are tighter, not a problem in that moment.

A pretty easy way to test that theory is try a shear stable oil of a bit higher viscosity. That is if you are using a 5W30 GF6 oil try something like Castrol Edge Euro 5W30 ACEA C3/C4. If you are worried it may clean it out to good then a synthetic 0W40 or 5W40 with the Porsche A40 certification. Walmart carries Castrol Euro in both grades for about $26 for a 5 quart jug.

IF you just want to test the filter idea change just that with the low pressure light comes on. If it corrects it, filter is loading fast and if not the viscosity is breaking down.

Your not looking to change your oil religion just testing the hypothesis.

AndySilverado · February 28, 2025

My pickup has 145k miles. Thanks everyone for your replies. I’ll do good filter next time AnA hope it resolved this issue. I’ll probably post again in about 2000 miles.

AndySilverado · August 17, 2025

Posting an update on this topic... Sorry it has been so long because my pickup made it 4700 miles (and 150 engine hours) which is about 3000 miles farther than I thought it would without the oil pressure going below 20 psi. Just like before, it got closest to low pressure after it was warmed up and at idle. The only major difference between oil changes that I can think of was the climate: 3 coldest months (December to February) vs mildest months (March to June).

I did full synthetic (https://www.mobil.com/en/lubricants/for-personal-vehicles/our-products/products/mobil-1-5w-30) and brought my own AC Delco UPF63R so we'll see how this goes. Thanks again for all the comments!