Castrol Edge EP 5w-20, 7548 miles, 16 GMC Sierra 6.2L

[4runner]

Code

DATE SAMPLED 	25-Aug-18	19-Dec-17	09-Apr-17
DATE RECEIVED 	06-Sep-18	04-Jan-18	26-Apr-17
DATE REPORTED 	11-Sep-18	10-Jan-18	28-Apr-17
SIF NO.
TIME ON UNIT mi	      33811	26263	18621
TIME ON OIL mi	      7548	7642	7207
OIL BRAND		Castrol	Castrol	Mobil
OIL TYPE		Edge EP	Edge EP	Mobil 1
OIL GRADE		SAE 5W20	SAE 5W20	SAE 0W20
OIL ADDED
FILTER    	    	Changed	Changed	Changed
OIL CHANGED     	Changed	Changed	Changed
WO NUMBER

Metals (ppm)
Iron (Fe)  		24 	20 	37
Chromium (Cr)   	1 	<1 	1
Lead (Pb) 		1 	<1 	<1
Copper (Cu)     	3 	2 	4
Tin (Sn)   	   	1 	<1 	<1
Aluminium (Al)  	7 	6 	3
Nickel (Ni)       	<1 	<1 	<1
Silver (Ag)       	<1 	<1 	<1
Titanium (Ti)    	24 	21 	<1
Vanadium (V)    	<1 	<1 	<1
Contaminants (ppm)
Silicon (Si)       	25 	22 	21
Sodium (Na)     	12 	5 	15
Potassium (K)   	7 	2 	<1
Additives (ppm)
Magnesium (Mg)  	12 	26 	136
Calcium (Ca)    	2104 	1936 	1705
Barium (Ba)     	<1 	<1 	<1
Phosphorus (P)  	540 	623 	671
Zinc (Zn)           	635 	743 	746
Molybdenum (Mo) 	71 	78 	95
Boron (B) 		149 	114 	74
Contaminants
Water (%) 		<0.05 	<0.05 	<0.05
Coolant    	    	No 	No 	No
Physical Tests
Viscosity (cSt 100C) 	7.8 	8.5 	8.0
Physical / Chemical
Base Number (mgKOH/g) 	2.2 	2.6 	2.6

FYI: Had fuel injectors cleaned around the 33,000 miles.

 

[tig1]

These engines appear to perform well with 20wt oils. My sons 2016 GMC Denali has the 6.2 and uses M1 0-20EP at 10-14K OCIs. The vehicle has 72K on it now and runs great. Only problems he has had is the trans low speed clunk. It's been in the shop 3 times for this. The last time, they pulled the trans, but the clunk is still there, only much less evident. A friend has a 2014 Silverado with 110,000K and also uses M1 0-20EP at 10-12 OCIs and all is well.

 

[oil_film_movies]

Wow, 33,811 miles on the oil! Wait, no, the title was supposed to have 7,548 miles in it. Would have been more interesting at 33k miles for sure. Maybe a moderator can fix that. The high iron may be normal for that engine. Blackstone reports have the very handy Universal Averages for the engine type.

 

[Patman]

I fixed the title

 

[dave1251]

You could try a 5W30. It is what I would use of the vehicle was out of warranty. As a matter of fact I have used it while in warranty. It provides a bit more viscosity reserve.

 

[pantygnome]

Originally Posted by dave1251

You could try a 5W30. It is what I would use of the vehicle was out of warranty. As a matter of fact I have used it while in warranty. It provides a bit more viscosity reserve.

Kind of what I was thinking....the viscosity on the latest Castrol 5W-20 seems low. Why the drop since the last use of the same oil? Did the fuel injector cleaning cause that?

 

[KirkLee]

Code

DATE SAMPLED     25-Aug-18    19-Dec-17    09-Apr-17
DATE RECEIVED     06-Sep-18    04-Jan-18    26-Apr-17
DATE REPORTED     11-Sep-18    10-Jan-18    28-Apr-17
SIF NO.
TIME ON UNIT mi          33811    26263    18621
TIME ON OIL mi          7548    7642    7207
OIL BRAND        Castrol    Castrol    Mobil
OIL TYPE        Edge EP    Edge EP    Mobil 1
OIL GRADE        SAE 5W20    SAE 5W20    SAE 0W20
OIL ADDED
FILTER                Changed    Changed    Changed
OIL CHANGED         Changed    Changed    Changed
WO NUMBER

Metals (ppm)
Iron (Fe)          24     20     37
Chromium (Cr)       1     <1     1
Lead (Pb)         1     <1     <1
Copper (Cu)         3     2     4
Tin (Sn)              1     <1     <1
Aluminium (Al)      7     6     3
Nickel (Ni)           <1     <1     <1
Silver (Ag)           <1     <1     <1
Titanium (Ti)        24     21     <1
Vanadium (V)        <1     <1     <1
Contaminants (ppm)
Silicon (Si)           25     22     21
Sodium (Na)         12     5     15
Potassium (K)       7     2     <1
Additives (ppm)
Magnesium (Mg)      12     26     136
Calcium (Ca)        2104     1936     1705
Barium (Ba)         <1     <1     <1
Phosphorus (P)      540     623     671
Zinc (Zn)               635     743     746
Molybdenum (Mo)     71     78     95
Boron (B)         149     114     74
Contaminants
Water (%)         <0.05     <0.05     <0.05
Coolant                No     No     No
Physical Tests
Viscosity (cSt 100C)     7.8     8.5     8.0
Physical / Chemical
Base Number (mgKOH/g)     2.2     2.6     2.6

FYI: Had fuel injectors cleaned around the 33,000 miles.

Code

DATE SAMPLED     25-Aug-18    19-Dec-17    09-Apr-17
DATE RECEIVED     06-Sep-18    04-Jan-18    26-Apr-17
DATE REPORTED     11-Sep-18    10-Jan-18    28-Apr-17
SIF NO.
TIME ON UNIT mi          33811    26263    18621
TIME ON OIL mi          7548    7642    7207
OIL BRAND        Castrol    Castrol    Mobil
OIL TYPE        Edge EP    Edge EP    Mobil 1
OIL GRADE        SAE 5W20    SAE 5W20    SAE 0W20
OIL ADDED
FILTER                Changed    Changed    Changed
OIL CHANGED         Changed    Changed    Changed
WO NUMBER

Metals (ppm)
Iron (Fe)          24     20     37
Chromium (Cr)       1     <1     1
Lead (Pb)         1     <1     <1
Copper (Cu)         3     2     4
Tin (Sn)              1     <1     <1
Aluminium (Al)      7     6     3
Nickel (Ni)           <1     <1     <1
Silver (Ag)           <1     <1     <1
Titanium (Ti)        24     21     <1
Vanadium (V)        <1     <1     <1
Contaminants (ppm)
Silicon (Si)           25     22     21
Sodium (Na)         12     5     15
Potassium (K)       7     2     <1
Additives (ppm)
Magnesium (Mg)      12     26     136
Calcium (Ca)        2104     1936     1705
Barium (Ba)         <1     <1     <1
Phosphorus (P)      540     623     671
Zinc (Zn)               635     743     746
Molybdenum (Mo)     71     78     95
Boron (B)         149     114     74
Contaminants
Water (%)         <0.05     <0.05     <0.05
Coolant                No     No     No
Physical Tests
Viscosity (cSt 100C)     7.8     8.5     8.0
Physical / Chemical
Base Number (mgKOH/g)     2.2     2.6     2.6

FYI: Had fuel injectors cleaned around the 33,000 miles.

I appreciate all of your help fellas. Here is an updated file. Currently 45,000 miles on the truck.

 

[himemsys]

Might want to edit that analysis, it has some personal info on it. Looks like the 5w-20s have done better than the 0w-20s, at least based on the iron wear. I would've expected the opposite. What's with the Titanium on those three Castrol samples? Is that an additive they use?