Penzoil ultra platinum with a Motorcraft oil filter.
My feeling is pick any reputable fully synthetic oil and stick to it. Make sure to change more sooner than later.
But my feeling is the filter makes all the difference some of those OE spec aftermarket are not as much OE spec. The Motorcraft filter has specific bypass valves that allow optimal oil pressure when you need it. This is crucial for a healthy 5.0 coyote motor.
For 7 years i’ve religiously used motorcraft 5w-30 and motorcraft oil filters in my ‘97 crown vic lx and it’s been great
I maintain 4 6.7s, in f350 and f450. Motorcraft filters and full synthetic 5w40 are my choice. I send Blackstone oil samples periodically and change them at 8k. So far, Blackstone keeps telling me I can let the oil go longer.
Motorcraft oil filters are also known for being of great quality.
Purolator was the producer of our filters last time I checked. Motorcraft filters are surprisingly good considering how cheap they are. The bypass setup, filter media, housing and overall quality are higher than what you’d get at a fast lube place.
Motorcraft filters are made by Purolator. It's been my experience that Motorcraft filters work perfectly fine. I used Motorcraft oil as well until I switched to full synthetic.
I also do mine at 5k, religiously. I use Honda Ultimate Full Synthetic 10w30 with a Honda brand filter.
$5 Motorcraft oil filter from Rock Auto
i use oem filters for my 2004 SiR, they’re pretty much the same price as any other good filters on the market
I've seen those leaking at the crimp now multiple times.
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