Both at the same weight what’s the difference? Have a couple tractors spend a lot on oil for debating FCP for them lol
Difference between HDEO and PCEO?
- Thread starter FlyingTexan
- Start date
There's significant differences in the additive package, particularly detergents and dispersants. A diesel produces a lot more soot which demands a different DI pack to manage that soot. The downside is that higher detergent content can work against ZDDP (anti-wear). A gas engine is less concerned about soot and more concerned with higher piston and bearing speed and low speed pre-ignition (LSPI) in GDI engines. An additive package with less detergent (particularly less calcium) is needed to prevent LSPI.
All true but things have changed a lot as of recently. For the longest time hdeo was as you describe. I've seen a few hdeo's have less aw and detergent additives than most euro oils and with one or two on par with regular pcmo's But just 5 years ago almost all diesel oils were still high calcium and high zinc and phos. Delo 5w-40 and delvac 1300 15w-40 come to mind for low additive counts.
As rdy4war described. Though things are different as of recently.
For an old tractor whatever cheap diesel oil will do. I'd use this. Bought a bunch and have no issues, it'd the direct brand for highline warren.
https://www.lowes.com/pd/MAG-1-Mag-1-15W40-CK4-H-D-Diesel-Oil-2-5-Gal/5001932875
I'll post the diesel oil voa. for some reason i's not letting me post the pcmo link.
For an old tractor whatever cheap diesel oil will do. I'd use this. Bought a bunch and have no issues, it'd the direct brand for highline warren.
https://www.lowes.com/pd/MAG-1-Mag-1-15W40-CK4-H-D-Diesel-Oil-2-5-Gal/5001932875
I'll post the diesel oil voa. for some reason i's not letting me post the pcmo link.
edyvw
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It would be good to stick this in passenger vehicle and Euro vehicle forums, because it is very succinct and to the point. So we don’t get: just buy Rotella T6.
As rdy4war described. Though things are different as of recently.
For an old tractor whatever cheap diesel oil will do. I'd use this. Bought a bunch and have no issues, it'd the direct brand for highline warren.
https://www.lowes.com/pd/MAG-1-Mag-1-15W40-CK4-H-D-Diesel-Oil-2-5-Gal/5001932875
Adds up the additive package and produces a ranking?
Is that so?
Is that so what? I don't know what you mean. I posted it to show that the thinking that hdeo's are always going to be high anti wear and high detergent and pcmo's are always low count isn't always true and not about adding up ppm counts to produce a ranking as that's unreliable in using to come to a conclusion about an oils performance.
4WD
$50 site donor 2025
I'm drawn to dislike rotella because of how much bad talk it gets and I trust many on here. I stopped buying it when I saw the foam test but at the same time I just can't find anyone having an actual bad result from using it even in foam sensitive engines like heui injector diesels. I've tried to look up oil related injector issues on here and elsewhere and nothing shows up with rotella. I don't like that it doesn't have friction modifiers either but it works in wet clutch bikes. Many claim to have gone several hundreds of thousands of miles on just rotella without any discernable engine wear or performance loss or anything. I won't disregard the oil foam test done on rotella but I don't think it's as bad as it's made out to be but i think there are far better oils for about the same price but at the same time does it matter as much as we make ourselves think?
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edyvw
$50 site donor 2025
Rotella became popular some 17-20yrs ago with first VW DI engines and Subaru's. VW's were diluting oil and there was not "thick" 40 grade. T6 was well into 14cst so it would not shear as much due to fuel as let's say M1 0W40 or at that time the most popular German Castrol.
Of course, that was just one variable, but it was enough to start T6 craze. Just review old internet forums, everything starts with fuel dilution and ends with T6.
Yrs I agree the spectrographic analyses aren’t showing additives, they show only decomposed compounds. And not all compounds are as effective at similar treat rates.
And adding up those elements is a silly exercise. You cannot rank oils.
4WD
$50 site donor 2025
What are you a motor oil geek hater?
Jokes aside yes that's all true and I know there are different reporting labs in that sheet and that there will always be a +/- x% variance in every test with the same equipment at the same lab with the same oil sample one after another. But again it's more for general pcmo and hdeo ppm count average demonstration and educational. Hdeo's aren't always going to be high particle count compared to non hdeo oils.
I never thought I'd agree with 540rat. What is happening right now?
Propflux01
$100 Site Donor 2025
4WD
$50 site donor 2025
I don’t even know what his rant was about - but most likely flat tappet race engines.
Propflux01
$100 Site Donor 2025
4WD
$50 site donor 2025
Yeah, he does/did some kind of one arm bandit testing for flat tappets - and not sure how he thinks that could apply to wet/shared sump use …
I think one of the best tests was dandruff shampoo
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I like WWilson prefer a HDEO for the long term durability. Especially a HPL HDEO. Had my bdoubts bout using it in the 11’ Focus and Dakota but not anymore.
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