Making Oil?
Senior User
Joined: Oct 2010
Posts: 266
Likes: 1
From: Sunshine Coast, BC
I did my first oil change @4700 miles and fuel content of
that oil was <0.5%. Less than 1/2 of 1 percent.
If you search on here, you can probably find the thread
where I posted the oil analysis.
So, no, not making oil at the moment.
Others have had higher fuel content. Some of it depends
on your driving style. Frequent short trips results in more
fuel in oil.
that oil was <0.5%. Less than 1/2 of 1 percent.
If you search on here, you can probably find the thread
where I posted the oil analysis.
So, no, not making oil at the moment.
Others have had higher fuel content. Some of it depends
on your driving style. Frequent short trips results in more
fuel in oil.
Postmaster
Joined: Apr 2009
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Regards
Post Fiend
Joined: Apr 2004
Posts: 5,158
Likes: 35
From: North of Salt Lake City
My first oil change showed a fuel content of 4%. I was concerned that that was high but learned that it needs to be at 7% before it needs attention. Waiting on next oil analysis from Blackstone. Should come any day now.
Thread Starter
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More Turbo
Joined: May 2008
Posts: 677
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From: Ontario, Canada
My first oil analysis at 9000 miles reported "neg" for fuel dilution. The oil had 4000 miles on it. The lab I use, reports "neg" for anything under 1%.
I am certainly not worried, I am just curious what others' results are like.
I am certainly not worried, I am just curious what others' results are like.
Post Fiend
Joined: Apr 2004
Posts: 5,158
Likes: 35
From: North of Salt Lake City
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Cross-Country
Joined: Sep 2010
Posts: 69
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To be clear: Blackstone Labs does not test for fuel content. The run an open-cup flash point test, and 'extrapolate' a fuel content.
DysonAnalysis.com
runs actual fuel measurement, rather than an extrapolation from flash point. Dyson's testing is much more sensitive (and accurate) than what BS gives. They also do closed-cup flash testing. We use Dyson for our fleet.
DysonAnalysis.com
runs actual fuel measurement, rather than an extrapolation from flash point. Dyson's testing is much more sensitive (and accurate) than what BS gives. They also do closed-cup flash testing. We use Dyson for our fleet.
Super Moderator
Joined: Aug 2003
Posts: 25,479
Likes: 738
From: Isanti, MN
To be clear: Blackstone Labs does not test for fuel content. The run an open-cup flash point test, and 'extrapolate' a fuel content.
DysonAnalysis.com
runs actual fuel measurement, rather than an extrapolation from flash point. Dyson's testing is much more sensitive (and accurate) than what BS gives. They also do closed-cup flash testing. We use Dyson for our fleet.
DysonAnalysis.com
runs actual fuel measurement, rather than an extrapolation from flash point. Dyson's testing is much more sensitive (and accurate) than what BS gives. They also do closed-cup flash testing. We use Dyson for our fleet.
But their basic analysis is $59, which is nearly 3 times what Blackstone charges!
If I had a commercial fleet that I expected to go many thousands of miles I might invest in that, but for my under warranty truck I'll just stick to the Blackstone reports!
Cross-Country
Joined: Sep 2010
Posts: 69
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I understand the expense; I sometimes swallow a little hard at the $129 for my personal vehicles, but it's been worth it to correcting things that were going amok early on.
My issue (speaking of personal vehicles now, not specifically the fleet) with Blackstone is that they are an extremely poor value, IMO, for what you get. The $12 - $25 analyses through your local oil distributor give you as good and as accurate info as BS, and I always got TBN from them for that price. Dyson is worth it to me for the better info, but if I wanted to spend less on each UOA, I wouldn't look at BS.
BTW: I couldn't get to our fleet UOAs earlier, or I'd have posted, but our new trucks are showing ~0.5% fuel after 500 - 600 miles. That's with <1,500 miles on the engines, though, so I'm hopeful things will tighten up over the next couple to few thousand.
My issue (speaking of personal vehicles now, not specifically the fleet) with Blackstone is that they are an extremely poor value, IMO, for what you get. The $12 - $25 analyses through your local oil distributor give you as good and as accurate info as BS, and I always got TBN from them for that price. Dyson is worth it to me for the better info, but if I wanted to spend less on each UOA, I wouldn't look at BS.
BTW: I couldn't get to our fleet UOAs earlier, or I'd have posted, but our new trucks are showing ~0.5% fuel after 500 - 600 miles. That's with <1,500 miles on the engines, though, so I'm hopeful things will tighten up over the next couple to few thousand.
Post Fiend
Joined: Apr 2004
Posts: 5,158
Likes: 35
From: North of Salt Lake City
I understand the expense; I sometimes swallow a little hard at the $129 for my personal vehicles, but it's been worth it to correcting things that were going amok early on.
My issue (speaking of personal vehicles now, not specifically the fleet) with Blackstone is that they are an extremely poor value, IMO, for what you get. The $12 - $25 analyses through your local oil distributor give you as good and as accurate info as BS, and I always got TBN from them for that price. Dyson is worth it to me for the better info, but if I wanted to spend less on each UOA, I wouldn't look at BS.
BTW: I couldn't get to our fleet UOAs earlier, or I'd have posted, but our new trucks are showing ~0.5% fuel after 500 - 600 miles. That's with <1,500 miles on the engines, though, so I'm hopeful things will tighten up over the next couple to few thousand.
My issue (speaking of personal vehicles now, not specifically the fleet) with Blackstone is that they are an extremely poor value, IMO, for what you get. The $12 - $25 analyses through your local oil distributor give you as good and as accurate info as BS, and I always got TBN from them for that price. Dyson is worth it to me for the better info, but if I wanted to spend less on each UOA, I wouldn't look at BS.
BTW: I couldn't get to our fleet UOAs earlier, or I'd have posted, but our new trucks are showing ~0.5% fuel after 500 - 600 miles. That's with <1,500 miles on the engines, though, so I'm hopeful things will tighten up over the next couple to few thousand.
Also, I'm not familiar with local oil distributors who perform these analyses. What companies to that?
New User
Joined: Jun 2003
Posts: 24
Likes: 0
I just bought one of these rigs, and have had a hard time analyzing this issue. The dealer told me that the DPF injection was exhaust stream, but what I've read seems to indicate that regeneration happens in-cylinder, which is what leads to oil dilution. Does anyone know the particulars of this well enough to give me a "final answer"?
Thank you so much.
Thank you so much.