Oil Analysis 12v71

[thoward]

I am looking for values on other oil reports. These are Blackstone values....

EMT Av My Sample
Alu 3 6
Chr 3 7
Irn 63 174
Cop 8 6
Led 4 8
Tin 4 7
Mly 35 23
Nic 0 0
Man 1 1
Slv 0 0
Tit 0 0
Pot 0 12
Bor 86 33
Sil 8 5
Sod 6 231
Cal 1709 1782
Mag 299 289
Pho 865 913
Zin 980 1039
Bar 0 0

 

[Mike53C]

Hi Thoward...
My oil provider is offering me a free oil analisys which of course I will accept as soon as I change oil. In order to use your data as a reference, could you please advise if those numbers are ppm, parts per million, or are in weight or what,...also the space in between numbers is this the decimal point, like 1.50, written 1 50 ?. And last, for sure I am being ignorant here, but what is Blackstone?
My engines are 12 71N, are yours normally aspirated too or turbo?
Miguel

 

[thoward]

The 1st number is the "Average" for that type of engine as per Blackstone Labs. The 2nd number is my engines number. Yes I think it is PPM. I have the 825 hp turbo engine. Blackstone does the lab analysis for us. I would like to see what other labs put out as "Average" for the 12v71. Our numbers are a little high due to some saltwater ingestion when we poped off a raw water hose(SPOs ) on her maiden voyage.

 

[Genesis]

Sodium and iron are high, everything else looks normal.

Iron may be high due to the saltwater mist stuff. Change and resample.

You reaching full WOT RPM ok?

 

[Mike53C]

The 1st number is the "Average" for that type of engine as per Blackstone Labs. The 2nd number is my engines number. Yes I think it is PPM. I have the 825 hp turbo engine. Blackstone does the lab analysis for us. I would like to see what other labs put out as "Average" for the 12v71. Our numbers are a little high due to some saltwater ingestion when we poped off a raw water hose(SPOs ) on her maiden voyage.

Ok, thankyou, as soon as I have my numbers will post them. The company that is going to do the analisys is the oil manufacturer itself (Venoco), so I would say they must have a good reference basis. I hope they show the results in a way we can compare.
Miguel

 

[thoward]

Genisis, they were worse but with the oil changes they are getting better. I figure 2 or 3 more and we will be on track. I have not run the boat very hard lately as the weather has been snotty each time we have been able to get out.

 

[captddis]

You might want to check the intercoolers on that engine. Recently had 2 out of 4 seeping on a pair of 12v71s

 

[Genesis]

Yeah, if you're STILL getting sodium contamination FIND AND FIX THAT - it will DESTROY the engines if not taken care of immediately!

 

[REBrueckner]

A thread late last year discussed 71 series oil analysis results...lots of detail....one was started by me...OIL ANALYSIS BENCHMARK...12-06-2006 Many labs don't have DD specs!!!. They are proprietary!!! There are several threads worth reading for real world results...

I was told normal Cr for two cycle DD is 0 to 5 PPM by one lab, yet 1,000 hours ago one of mine read 12 and was not flagged at the time. Most recent reading was considerably lower (7, I think) which is odd. Also, the duration of oil use at test time is important...specs are for standard intervals 150 hours for 71 series, I believe.
If your readings were, say, at 75 hours oil use, double them to compare with standards. And prorate hours/results for comparisons with other's results....