Hi guys. First of all, thanks to all of you who share your knowledge on this site. I find it a great resource of information. This is my first UOA, done for an '04 Honda Accord 2.4L 4-cyl with 5-manual transmission. I've owned it since new. 36 miles on the odo when I purchased it. The oil, PYB SM 5W-20 with a purolator pureone filter, was in service from 4/6/11 through 8/1/11 for a total of 6228 miles. I added 1 can of Lubro-moly MOS2 at the start of the OCI. Miles were about a 60/40 split hwy to city, with longer hwy trips (300 miles +) thrown in along the way. I never warm the car by letting it idle but I'm easy on it for the first several miles until it is up to temp. I'll get on it in third gear for hwy on ramps but otherwise am pretty conservative. Hwy cruises are between 70-75mph. Not only is this my first UOA, but it is my first run of conventional oil. The first 40,000 miles were with Kendall GT1 semi-syn 5w-20 and a generic filter at a tire shop @ 5000mi oci. I started doing my own changes after that with pp 5w-20 and either a p1 filter or oem filter. I have to say that the most surprising thing to me about this report was the high tbn of 4.7 after 6228 miles. No top offs. The silicon was higher than the average and I changed out my air filter after this drain. The air filter had ~ 18,000 miles on it. My current fill is Motorcraft 5w-20 semi-syn with a pureone filter. I plan on keeping it in for the Winter (Northeast) with another uoa in the spring to see if there are any changes. My original plan was to keep the car going for hopefully 200k but now I'll extend that to 250-300k. I think Honda's can do that pretty easily as long as all maintenance is current. BLACKSTONE COMMENTS: Jim: Thanks for the note about the oil additive you used. You can see it at molybdenum, and we aren't sure if that's the reason for the low wear we found or just that this engine wears well. Universal averages show typical wear levels for Honda's 2.4L after about 6,700 miles use on the oil. Your oil was run close to that level, yet almost all wear read lower. That's an excellent indication that no problems are developing. The TBN was still nice and strong at 4.7, so lots of active additive was still left. 1.0 is a low TBN reading. Nice report at 88,279 total miles.
MI/HR on Oil 6228 MI/HR on Unit 88,279 Sample Date 9/21/11 Make up oil added 0 qts Tested values/universal avg Aluminum 2/3 Chromium 0/0 Iron 5/9 Copper 1/4 Lead 0/2 Tin 2/1 Molybdenum 422/77 Nickel 0/0 Manganese 0/2 Silver 0/0 Titanium 0/0 Potassium 0/2 Boron 48/52 Silicon 14/12 Sodium 7/36 Calcium 2574/2324 Magnesium 9/34 Phosphorus 774/678 Zinc 856/815 Barium 0/0 tested /values should values /be SUS Visc @ 210F 51.6/46-59 cSt Visc @ 100C 7.75/6.0-10.2 Flashpoint 410/>355 Fuel % <0.5/<2.0 Antifreeze % 0.0/0.0 Water % 0.0/<0.1 Insolubles % 0.2/<0.6 TBN 4.7