UOA by Oil Analyzers Inc.
Driving conditions: Oil in use since Sep 2010; 7 mile daily commute each way; spirited driving with a few WOT’s here and there on days where I have a 30 minute drive. In October, a trip to RI and to the White Mountains of NH (fun mountain driving). Most of my consumption is usually on trips if I’m driving on the Interstate at steady highway speeds. Temps down into the single digits this past winter. Wear looks pretty good, IMO, although I did only go 767 miles after the last quart of make-up oil.
My last uoa is here.
The last quart of make-up oil used was PU 5W-30. Went to the local Ferrari dealer and they didn’t even sell PU 5W-40 since they use the Quaker State version. Ended up going to Wal-Mart to get PU 5W-30.
Comments: Lubricant and filter change is suggested if not done at sampling time; Infared results indicate NITRATION is significantly high; Viscosity is SLIGHTLY LOW
Equipment make: Subaru
Equipment model: 2.5L Turbo
Oil use interval: 5,997 miles
Oil type & Grade: Pennzoil Ultra Euro 5W-40
Make-up oil added: 2 qts. (1 qt @ 2,037 miles into OCI; 1 qt at 5,230 miles )
Miles on unit: 105,639
Air filter: Amsoil Ea panel filter
Oil filter: Mobil1 EP
Overall severity of report = 3 abnormal
(newest to oldest, left to right)
PU 5W40; M1 0W40; SSO; SSO;
Iron 8 7 11 11
Chromium 0 0 0 0
Nickel 0 0 0 0
Aluminum 2 0 3 3
Copper 8 15 5 6
Lead 1 0 10 4
Tin 0 0 1 0
Cadmium 0 0 1 0
Silver 0 0 0 0
Silicon 7 8 10 11
Sodium 10 22 28 90
Potassium 0 3 2 2
Titanium 0 0 0 0
Molybdenum 24 123 2 1
Antimony 1 2 0 0
Manganese 0 0 4 0
Lithium 0 0 3 0
Boron 117 112 7 7
Magnesium 19 30 17 17
Calcium 2347 2805 3497 3423
Barium 0 0 0 0
Phosphorus 824 880 654 677
Zinc 1050 1061 717 755
Lube chg N
Filter chg N
Fuel Soot Water Vis @ 100C: 12.1 13.2 10.1 9.6
TBN 3.78 1.99 4.35 4.01
Oxidation 15 37 43 38
Nitration 27 27 32 27
I’m a little concerned about the nitration, but there really isn’t much change over the past four OCI’s. In between the run on SSO and M1 0W-40, there was one run on Red Line 5W-30 which I didn’t have a uoa done on since it was right after a turbo failure at ~80,000 miles.
As many of you know, Subaru's OCI on this engine is 3,750 miles due to clogging of the turbo oil line screen. My failure was shortly after I received a P0011 (camshaft timing over advance), but the tech said that all screens were clear. It should have been since that turbo only had 10-12k miles on it. I’ve been much more conscious of taking it easy until the oil is warm and cooling down after my 7 mile commute.
Considering switching to Red Line or Motul since I can get $100 off with my Subaru credit card rewards. A Subaru dealer in PA carries Red Line and one in MD carries Motul. I’m thinking the esters in Red Line, 300V, or X-Lite might be ideal. I’m also thinking of just going with Motul Eco-nergy 5W-30 because of the high price of fuel!
Comments?
-Dennis
Driving conditions: Oil in use since Sep 2010; 7 mile daily commute each way; spirited driving with a few WOT’s here and there on days where I have a 30 minute drive. In October, a trip to RI and to the White Mountains of NH (fun mountain driving). Most of my consumption is usually on trips if I’m driving on the Interstate at steady highway speeds. Temps down into the single digits this past winter. Wear looks pretty good, IMO, although I did only go 767 miles after the last quart of make-up oil.
My last uoa is here.
The last quart of make-up oil used was PU 5W-30. Went to the local Ferrari dealer and they didn’t even sell PU 5W-40 since they use the Quaker State version. Ended up going to Wal-Mart to get PU 5W-30.
Comments: Lubricant and filter change is suggested if not done at sampling time; Infared results indicate NITRATION is significantly high; Viscosity is SLIGHTLY LOW
Equipment make: Subaru
Equipment model: 2.5L Turbo
Oil use interval: 5,997 miles
Oil type & Grade: Pennzoil Ultra Euro 5W-40
Make-up oil added: 2 qts. (1 qt @ 2,037 miles into OCI; 1 qt at 5,230 miles )
Miles on unit: 105,639
Air filter: Amsoil Ea panel filter
Oil filter: Mobil1 EP
Overall severity of report = 3 abnormal
(newest to oldest, left to right)
PU 5W40; M1 0W40; SSO; SSO;
Iron 8 7 11 11
Chromium 0 0 0 0
Nickel 0 0 0 0
Aluminum 2 0 3 3
Copper 8 15 5 6
Lead 1 0 10 4
Tin 0 0 1 0
Cadmium 0 0 1 0
Silver 0 0 0 0
Silicon 7 8 10 11
Sodium 10 22 28 90
Potassium 0 3 2 2
Titanium 0 0 0 0
Molybdenum 24 123 2 1
Antimony 1 2 0 0
Manganese 0 0 4 0
Lithium 0 0 3 0
Boron 117 112 7 7
Magnesium 19 30 17 17
Calcium 2347 2805 3497 3423
Barium 0 0 0 0
Phosphorus 824 880 654 677
Zinc 1050 1061 717 755
Lube chg N
Filter chg N
Fuel Soot Water Vis @ 100C: 12.1 13.2 10.1 9.6
TBN 3.78 1.99 4.35 4.01
Oxidation 15 37 43 38
Nitration 27 27 32 27
I’m a little concerned about the nitration, but there really isn’t much change over the past four OCI’s. In between the run on SSO and M1 0W-40, there was one run on Red Line 5W-30 which I didn’t have a uoa done on since it was right after a turbo failure at ~80,000 miles.
As many of you know, Subaru's OCI on this engine is 3,750 miles due to clogging of the turbo oil line screen. My failure was shortly after I received a P0011 (camshaft timing over advance), but the tech said that all screens were clear. It should have been since that turbo only had 10-12k miles on it. I’ve been much more conscious of taking it easy until the oil is warm and cooling down after my 7 mile commute.
Considering switching to Red Line or Motul since I can get $100 off with my Subaru credit card rewards. A Subaru dealer in PA carries Red Line and one in MD carries Motul. I’m thinking the esters in Red Line, 300V, or X-Lite might be ideal. I’m also thinking of just going with Motul Eco-nergy 5W-30 because of the high price of fuel!
Comments?
-Dennis
