I'm seeing high fuel percentage in my UOA from Blackstone. This car resides garaged in San Diego and is primarily a highway commuter or long roadtrip car; not exactly severe usage. I'm concerned about potential buildup on the valves since this engine is DI. I know Blackstone's flashpoint methodology is rather rudimentary, but I'm assuming the percentage is quite high regardless of any error margin (3.3% and 2% in my most recent samples).
Side note: I ditched factory fill after warranty period. I've been using Castrol 0w20 w/ Titanium with the hope of increasing change interval; did I get cheated on the 33k fill (ie did they put in the standard synth)? Far higher percentage of Ti on second sample, and I watched that one go in.
Until I get the fuel problem resolved I'm going to be using standard synthetic. Switching to 91-octane based on suggestions from this forum to see if that improves the issue.
Any feedback is appreciated. Is this common w/ DI? w/ Skyactiv?
Code:
OIL CASTROL SYNTEC TITANIUM 0w20
MILES IN USE 7.5k 7.0k
MILES 40.6k 33.0k
SAMPLE TAKEN 10/30/14 5/21/14
ALUMINUM 3 3
CHROMIUM 0 0
IRON 7 8
COPPER 0 1
LEAD 1 1
TIN 0 0
MOLYBDENUM 79 87
NICKEL 0 1
MANGANESE 0 0
SILVER 0 0
TITANIUM 28 1
POTASSIUM 3 4
BORON 26 28
SILICON 9 7
SODIUM 7 11
CALCIUM 776 895
MAGNESIUM 1374 1111
PHOSPHORUS 602 593
ZINC 796 774
BARIUM 0 0
INSOLUBLES 0.3 0.2
WATER 0 0
FLASHPOINT ºF 320 345
SUS VIS 210ºF 50.4 48.2
cSt @ 212ºF 7.38 6.72
FUEL% 3.3 2.0
TBN 4.6 5.6
2013 Mazda CX-5 Touring AWD
Side note: I ditched factory fill after warranty period. I've been using Castrol 0w20 w/ Titanium with the hope of increasing change interval; did I get cheated on the 33k fill (ie did they put in the standard synth)? Far higher percentage of Ti on second sample, and I watched that one go in.
Until I get the fuel problem resolved I'm going to be using standard synthetic. Switching to 91-octane based on suggestions from this forum to see if that improves the issue.
Any feedback is appreciated. Is this common w/ DI? w/ Skyactiv?
Code:
OIL CASTROL SYNTEC TITANIUM 0w20
MILES IN USE 7.5k 7.0k
MILES 40.6k 33.0k
SAMPLE TAKEN 10/30/14 5/21/14
ALUMINUM 3 3
CHROMIUM 0 0
IRON 7 8
COPPER 0 1
LEAD 1 1
TIN 0 0
MOLYBDENUM 79 87
NICKEL 0 1
MANGANESE 0 0
SILVER 0 0
TITANIUM 28 1
POTASSIUM 3 4
BORON 26 28
SILICON 9 7
SODIUM 7 11
CALCIUM 776 895
MAGNESIUM 1374 1111
PHOSPHORUS 602 593
ZINC 796 774
BARIUM 0 0
INSOLUBLES 0.3 0.2
WATER 0 0
FLASHPOINT ºF 320 345
SUS VIS 210ºF 50.4 48.2
cSt @ 212ºF 7.38 6.72
FUEL% 3.3 2.0
TBN 4.6 5.6
2013 Mazda CX-5 Touring AWD