Originally Posted By: CrazyMike
Awesome info, thx everyone. I've sent off uoa before, all changes show lots of additives remaining but high silica count, very dusty here. Doesn't change with stock intake/stock filter or the s&b intake with dry filter and wrap I'm using now. Changing exhaust and re calibrating flow doesn't change frequency either. This truck from what I've seen even though ford claims no loss in mpg with the 440/860 output, it's a pantload. I have '11-14 diesels in fleet, they all have better mpg in same conditions, and regen half the time with twice the kms.
The '15 gets fully warmed up every day, at least 40kms of highway a day with around town driving. The mineral 15/40's start out fine, but becomes frequent with regens as the oil dirties up. Filters have been wix or oem, no noticeable difference.
Full synthetics, 0w40 or Mobil delvac 5w40, or this current synthetic blend, they all are descent when fresh, and last a bit longer before frequent regens become irritating, the current syn blend excluding since it's only been a week since the change.
I was assuming the euro specs "may" be cleaner or more refined than the cj-4 options I've tried, extending the time between regen cycles. IMO, outside of a delete, and or adding a amsoil/Donaldson bypass system with a fine micron filter, I don't think there's much I can do. I've read, and been told more than once, there's been great results up here with amsoil's 15/40 cj-4, and it has great properties against cylinder wash with newer dpf diesels, I just hate boutique lubes. The calibration of the dpf on this truck has been checked by dealer more than once. If the 229.51 is a poor choice I'll keep focus on the cj-4 products, a delete or at least a bypass to filter better.
Again - I don't understand how/why you are equating your regen cycles to the type base stock you use ... What criteria are you using to measure the perceived differences?
If you believe that the base stock has something to do with the regens, then you need to define a reliable measurement system, track accurately in a log, and then manage the data with some credible form of analysis.
At this point, because you've not done this, it's all incidentally anecdotal. Your perception is tainting your observations, and your conclusions are completely biased.
You CANNOT use regen cycles as a means to judge a lube; there's just no conscionable way to get there.
And just what evidence, testimony or even guttural uttering have you be subjected to that makes you believe that a bypass filter will alter your regen cycles?
Regens are predicated on several engine operational criteria (temps, time since last regen, duty cycle loading, etc) as well as back-pressure from the DPF. How is it that you believe the lubes/filters alters these things?
You are confusing correlation with causation.