Here are the results from my car's first uoa from Blackstone Labs. Unfortunately, a search on the forum failed to turn up any "how-to" instructions for posting Blackstone's results here in the original .pdf format. Suggestions?
EQUIPMENT MAKE: 2005 Mazda 3
EQUIPMENT MODEL: 2.0L 4-cyl, 5-speed manual
FUEL TYPE: Gasoline Unleaded
TOTAL MILES ON UNIT: 20,453
OIL USE INTERVAL: 6,502 Miles
OIL TYPE & GRADE: Mobil 1 5W/30 Gas
MAKE-UP OIL ADDED: 0 qts
Note: this was not the EP version of Mobil 1
Comments:
We tend to see high wear and silicon in new engines such as this one. Your wear is doing well -- only aluminum has yet to swing into the normal range. All other wear read normally for this type engine-see universal averages, and we found nothing in the oil that should not have been there. We think this Mazda 2.0L is doing remarkably well for being so new. Obviously you’re treating it well. The TBN was 4.6, plenty of active additive left - 1.0 is considered too low. You could probably go to 7500 miles for your next sample and check back to see the results.
ELEMENTS IN PARTS PER MILLION:
Note: universal averages per Blackstone follow behind the /
ALUMINUM - 4/3
CHROMIUM - 0/1
IRON - 4/8
COPPER - 3/3
LEAD - 0/1
TIN - 0/1
MOLYBDENUM - 104/88
NICKEL - 0/0
MANGANESE - 0/0
SILVER - 0/0
TITANIUM - 0/0
POTASSIUM - 0/1
BORON - 38/54
SILICON - 10/8
SODIUM - 4/5
CALCIUM - 2014/2312
MAGNESIUM - 12/36
PHOSPHORUS - 576/728
ZINC - 680/847
BARIUM - 0/0
SUB VISCOSITY @ 210 DEG. F - 58.3/SHOULD BE 55-62
FLASHPOINT IN DEG. F - 405/SHOULD BE >365
FUEL % - SHOULD BE ANTIFREEZE % - 0.0/SHOULD BE 0
WATER % - 0.0/SHOULD BE 0
INSOLUBLES % - .2/SHOULD BE < .6
I'm generally pleased by the results but am curious to hear what the forum's resident experts may have to say about them.
I've noted that the universal averages listed by Blackstone for Mazda's 2.0 L engines are slightly lower for aluminum, iron & copper vs those for the 2.3 L engines. Am I correct in interpreting this may mean that based on Blackstone's sample averages Mazda's 2.0 L engines may tend to show slightly reduced levels of wear metals?
I was also pleased by the TBN results for it looks like I could safely extend my oil change interval when running Mobil 1 5w-30 to over 7,500 miles. Still, I probably won't do so while the car's still under warranty. Finally, to those who may say Mazda's recommended 5w-20 is "best" for these engines, I submit these results show there's no disadvantage to using 5w-30 in these small engines. Finally, to those who may say using 30 weight can hurt your fuel economy, be advised that I'm currently running Havoline 10w-30 dino and when I filled up yesterday the result was 369.8 miles on 9.161 gallons = 40.367 mpg on Shell regular. All miles were accumulated while commuting 55 miles/day, approximately 50% freeway-generally limited to @ 65 mph, or less. My car's EPA highway rating is 35 mpg, yet my average fuel economy to date is 37.349 mpg, based on 20,877.1 miles/558.986 gallons.
[ May 24, 2006, 11:29 AM: Message edited by: CDTMAZDA3 ]
EQUIPMENT MAKE: 2005 Mazda 3
EQUIPMENT MODEL: 2.0L 4-cyl, 5-speed manual
FUEL TYPE: Gasoline Unleaded
TOTAL MILES ON UNIT: 20,453
OIL USE INTERVAL: 6,502 Miles
OIL TYPE & GRADE: Mobil 1 5W/30 Gas
MAKE-UP OIL ADDED: 0 qts
Note: this was not the EP version of Mobil 1
Comments:
We tend to see high wear and silicon in new engines such as this one. Your wear is doing well -- only aluminum has yet to swing into the normal range. All other wear read normally for this type engine-see universal averages, and we found nothing in the oil that should not have been there. We think this Mazda 2.0L is doing remarkably well for being so new. Obviously you’re treating it well. The TBN was 4.6, plenty of active additive left - 1.0 is considered too low. You could probably go to 7500 miles for your next sample and check back to see the results.
ELEMENTS IN PARTS PER MILLION:
Note: universal averages per Blackstone follow behind the /
ALUMINUM - 4/3
CHROMIUM - 0/1
IRON - 4/8
COPPER - 3/3
LEAD - 0/1
TIN - 0/1
MOLYBDENUM - 104/88
NICKEL - 0/0
MANGANESE - 0/0
SILVER - 0/0
TITANIUM - 0/0
POTASSIUM - 0/1
BORON - 38/54
SILICON - 10/8
SODIUM - 4/5
CALCIUM - 2014/2312
MAGNESIUM - 12/36
PHOSPHORUS - 576/728
ZINC - 680/847
BARIUM - 0/0
SUB VISCOSITY @ 210 DEG. F - 58.3/SHOULD BE 55-62
FLASHPOINT IN DEG. F - 405/SHOULD BE >365
FUEL % - SHOULD BE ANTIFREEZE % - 0.0/SHOULD BE 0
WATER % - 0.0/SHOULD BE 0
INSOLUBLES % - .2/SHOULD BE < .6
I'm generally pleased by the results but am curious to hear what the forum's resident experts may have to say about them.
I've noted that the universal averages listed by Blackstone for Mazda's 2.0 L engines are slightly lower for aluminum, iron & copper vs those for the 2.3 L engines. Am I correct in interpreting this may mean that based on Blackstone's sample averages Mazda's 2.0 L engines may tend to show slightly reduced levels of wear metals?
I was also pleased by the TBN results for it looks like I could safely extend my oil change interval when running Mobil 1 5w-30 to over 7,500 miles. Still, I probably won't do so while the car's still under warranty. Finally, to those who may say Mazda's recommended 5w-20 is "best" for these engines, I submit these results show there's no disadvantage to using 5w-30 in these small engines. Finally, to those who may say using 30 weight can hurt your fuel economy, be advised that I'm currently running Havoline 10w-30 dino and when I filled up yesterday the result was 369.8 miles on 9.161 gallons = 40.367 mpg on Shell regular. All miles were accumulated while commuting 55 miles/day, approximately 50% freeway-generally limited to @ 65 mph, or less. My car's EPA highway rating is 35 mpg, yet my average fuel economy to date is 37.349 mpg, based on 20,877.1 miles/558.986 gallons.
[ May 24, 2006, 11:29 AM: Message edited by: CDTMAZDA3 ]
