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  #13  
Old 02-08-2015, 04:26 PM
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Re: oil sample + 10,000 miles

Diesel on SRT? Don't think so...

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  #14  
Old 02-08-2015, 04:48 PM
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Re: oil sample + 10,000 miles

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Originally Posted by Morax View Post
Diesel on SRT? Don't think so...

That would explain 6mo or 6,000mi.
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Old 02-08-2015, 06:29 PM
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Re: oil sample + 10,000 miles

Did my first change at 7500 miles Blackstone results posted if you search my username. TBN was still high like around 3.4-8 which means that to reach 10K miles there is a huge reserve left. To be clear TBN is typically a high pH product that helps to neutralize the acid produced. I can't recall the lower limit think it is around 1.0 TBN so from my perspective I see no reason to change any earlier than 10K miles and keep my warranty intact...
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Old 02-08-2015, 06:47 PM
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from my perspective I see no reason to change any earlier than 10K miles and keep my warranty intact
I absolutely concur, but changers gonna change.
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Old 02-08-2015, 07:29 PM
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Re: oil sample + 10,000 miles

But I live here in Wisconsin where it's -20F in the morning one day and +40F a couple of days later. Those extreme cold temps should warrant more frequent oil changes I would have to believe. The moisture that gets produced with those temps must be alot. In Florida you could go 10K with those steady temps.
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Old 02-08-2015, 07:38 PM
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Hey, I don't care what you do with your time and money. Do us a favor though and post your Blackstone results here; the more data points the community has, the better.

BTW, while the manual says nothing about derating engine oil due to ambient temperatures, it does discuss derating due to the use of B5 to B20 (the max allowable) diesel.
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Old 02-08-2015, 08:58 PM
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Re: oil sample + 10,000 miles

Quote:
Originally Posted by chadg2 View Post
But I live here in Wisconsin where it's -20F in the morning one day and +40F a couple of days later. Those extreme cold temps should warrant more frequent oil changes I would have to believe. The moisture that gets produced with those temps must be alot. In Florida you could go 10K with those steady temps.

I wouldn't worry too much about the lower temps on oil life. And any water that condenses after shutdown will be burned off next time you drive - provided the oil gets to operating temp on a long enough drive. And the water/moisture/ burn off cycle goes on and on. That's why auto engines don't typically have rust problems caused by condensation, because they are driven frequently. Whereas on piston aircraft engines that go unused more frequently rust can be a concern. I've known some private pilots that open the oil dip stick fill tube for a while after shutdown in the hope to allow some of the steam/moisture to escape. I've done that a few times but at the end of the day it's probably just a feel good measure.
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  #20  
Old 02-08-2015, 10:12 PM
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Re: oil sample + 10,000 miles

Quote:
Originally Posted by Roadkill View Post
Hey, I don't care what you do with your time and money. Do us a favor though and post your Blackstone results here; the more data points the community has, the better.

BTW, while the manual says nothing about derating engine oil due to ambient temperatures, it does discuss derating due to the use of B5 to B20 (the max allowable) diesel.
This was just a recommendation from the Service Dept. of the Dealership where I bought my Jeep. They know I do all my own oil changes so I doubt it was just to draw up business for themselves. I will post my Blackstone results and use the approved engine oil. Thanks.
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  #21  
Old 02-10-2015, 10:17 PM
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Re: oil sample + 10,000 miles

Florida has many days with 100% humidity which means lots of moisture in the engine area.
As mentioned burning the moisture off will keep the TBN up. Remember this engine runs hot was designed to run hot and that should take care of the moisture issue...
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Old 02-17-2015, 05:03 PM
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Re: oil sample + 10,000 miles

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Originally Posted by chadg2 View Post
Anyone using Pennzoil Ultra Euro L taken an oil sample at +10,000 and after the first oil change was already done?
Yes.
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  #23  
Old 02-18-2015, 12:04 AM
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Re: oil sample + 10,000 miles

I wouldn't worry about TBN, really at all. ULSD is much easier on engine oil, instead of needing 10-12 TBN; they're using a lower TBN now without issue. Remember TBN is dispersents and detergents, offer nothing for lubrication provided additives are able to nutrilize acids.

What concerns me is the Fe numbers.
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