Oil change

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Tulecreeper

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Sthrn AZ
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6.4 Hemi
My Hemi parked most of the time. I do 5,000 oci. But had less than 3800 miles for a year so it got changed and added lube guard biotech for good measure
I put 4200 on mine between March 2023 (when I picked it up) and March this year, then had it changed. Then I drove across country and put 1500 on it, plus another 500 since I got here, so 6200 now. I figure I can go to about 10,000 before I need it again, but a year will go by before I hit that mark so I'll end up changing it sooner.
 

mdc1990zr1

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Conshohocken, PA
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2016
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Hemi 5.7
I look and smell the oil, that tells me when to change it.
When I was a chemist, I analyzed hydrocarbons and tested them thru a mass spectrometer ion the ppm (parts per million) range. I had to look and most importantly, smell the hydrocarbons and make a dilution based on the smell. As time went on, an electronic "sniffer" was available instead of your nose. The moral of this story: sniffing hydrocarbons can and will cause cancer. You can read up on this on MSDS (material safety data sheets) material.
 

nascar72

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Canada
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2008
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Hemi 5.7
I can't imagine any oil states that you can go 10 years or 300,000 miles before a change...and if they do, I would run, not walk away from that oil manufacturer!!!
Must be some sort of warranty or something but you have to follow the vehicle's manufacturer's recommendations as for oil change intervals. I think Quaker State had that kind of warranty something like 20-30 years ago.
 

Burla

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2010 Hemi Reg Cab 4x4
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Hemi
You never know how quick an engines builds acid thus eats TBN and oil turns to acid unless you get a used oil analysis, every engine is different. As insurance you could use a product like bgmoa in the middle of an interval which would replenish good CA. I prefer the advanced formula bgmoa, it is more mag then CA, which is desirable, but even regular bgmoa will do. Rotella isn't what it used to be, the new version is sparce with additives due to regulation of ck-4 goals.
 

Florida John

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2019
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5.7L HEMI
When I was a chemist, I analyzed hydrocarbons and tested them thru a mass spectrometer ion the ppm (parts per million) range. I had to look and most importantly, smell the hydrocarbons and make a dilution based on the smell. As time went on, an electronic "sniffer" was available instead of your nose. The moral of this story: sniffing hydrocarbons can and will cause cancer. You can read up on this on MSDS (material safety data sheets) material.
Ok, no more sniffing or tasting :eek:
 
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