Pontiac GTP L67 3800, PP 5w30 4.4k

Joined
Mar 17, 2005
Messages
893
Location
LI, NY
Slight coolant leak in sample, no noticeable amount missing though.
 Code:
OIL              PP5w30   PP5w30   GC0W30   GC0W30   GC0w30   GC0w30   M15w30*  M15w30*  M15w30   M15w30EP M15w30   M110w30  M15w30   M110w30                              
MILES IN USE     4.4k     4.6k     4.4k     4.3k     4.4k     4.6k     4.8k     5.5k     5.7k     5.6k     6.2k     8.7k     7k       5k       Uni Avg                     
MILES            177.7k   173.3k   164.8k   156.8k   152.5k   148.1k   143.5k   138.7k   133.2k   128k     121.9k   115.7k   107k     95k                                  
SAMPLE TAKEN     4/19/09  1/23/09  8/2/08   2/9/08   10/27/07 7/21/07  4/7/07   1/6/07   9/2/06   5/7/06   1/7/06   8/21/05  2/28/05  6/6/04                               
                                                                                                                                                                  
ALUMINUM         2        3        2        3        2        3        4        3        2        2        3        2        2        2        3                           
CHROMIUM         0        1        1        1        0        1        1        1        0        1        1        1        1        1        1                           
IRON             9        13       12       14       12       17       24       19       14       16       22       18       17       13       14                          
COPPER           9        12       12       14       14       13       12       14       14       13       15       17       13       16       18                          
LEAD             4        8        18       14       22       19       10       14       28       11       23       42       5        5        7                           
TIN              1        1        0        2        0        0        0        0        1        0        0        1        2        1        1                           
MOLYBDENUM       53       50       3        2        6        18       91       84       82       72       85       77       60       70       41                          
NICKEL           0        1        1        1        0        1        1        2        0        0        1        0        0        1        0                           
MANGANESE        0        0        1        0        0        0        0        1        1        0        0        0        0        0        0                           
SILVER           0        0        0        0        0        0        0        0        0        0        0        0        0        0        0                           
TITANIUM         0        0        0        0        0        0        0        0        0        0        0        0        0        0        0                           
POTASSIUM        17       22       9        16       6        10       20       9        6        6        11       17       11       7        7                           
BORON            26       25       4        3        5        12       57       60       51       122      55       106      104      150      45                          
SILICON          5        7        8        8        7        9        11       11       11       11       12       9        9        11       11                          
SODIUM           36       48       23       35       19       24       46       20       6        9        10       14       12       19       11                          
CALCIUM          3067     3267     2494     1896     1866     2013     2564     2308     2731     2294     2705     2780     2302     3134     2128                        
MAGNESIUM        34       131      593      563      525      424      20       15       14       19       19       19       25       23       131                         
PHOSPHORUS       703      766      981      870      842      797      737      658      673      698      677      745      592      831      741                         
ZINC             870      1082     1251     1066     1082     1041     932      818      834      870      838      946      694      983      901                         
BARIUM           0        0        0        0        0        0        0        0        0        0        0        0        0        0                                    
                                                                                                                                                                  
                                                                                                                                                                  
INSOLUBLES       0.3      0.3      0.3      0.3      0.4      0.3      0.3       0.3      0.3     0.3     0.3      0.4      0.4      0.5                                   
WATER            0        0        0        0        0        0        0         0        0       0       0        0        0.1      0                                     
FLASHPOINT ºF    400      385      405      415      415      395      405       395      390     370     395      425      385      375                                   
SUS VIS 210ºF    59.5     61       66.9     67.7     66.8     67.7     63.6      64.4     63.2    62.5    61.8     65.3     63       62.2                                  
cSt VIS 100°C    10.08    10.51    12.13    12.35    12.11    12.33    11.22     11.44    11.11   10.91   10.7     11.68    11.05    10.8                                  

* 4 qts M1 5w30 + 1 qt M1EP 15w50

 
Joined
Sep 8, 2005
Messages
15,234
Location
Canada
Not bad results at all. The minorness of this leak, and the constant flushing of short OCI's will most likely keep this engine going for a while. One of the few places where short OCI's with a quality oil are a cost-effective choice (as opposed to repair).
 

ATS-V

Thread starter
Joined
Mar 17, 2005
Messages
893
Location
LI, NY
Seems I was correct that lead wear was not proportional to the coolant leak. Oldest 2 M1 intervals were prior to a formulation change when lead shot up. I then gave M1 a chance for a while even thickening it with some 15w50 with the same results. I then switched to GC for several intervals with less than stellar results. Current fill is PP10w30.
 
Joined
May 9, 2006
Messages
1,453
Location
Grand Rapids, MI
Looks pretty good, I would keep a close eye on your coolant level and keep running it. The wear numbers are nice. I hope mine looks as good when I check mine on the next change. I've got PP 10W-30 in it right now and I've been running PP since my last UOA a few changes ago. I've been running 4.5k OCI's I think. I ran 5W30 in the winter. The GC didn't work so well in my wagon so I never tried in in my GP.
 
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