Haven't seen many UOAs for GS500, nor running this oil, so figured I'd post this. Didn't come out nearly as bad as I anticipated.
The fuel dilution might have come from the short trips I had been doing with the bike - my commute was 7 miles each way and I didn't have much time for longer pleasure rides. Also, I did leave the manual petcock open once, which flooded the airbox a bit.
Subjective impressions: felt like the oil had thinned out, fast. Within a few hundred miles it became quite hard to shift into first from a stop, without messing with the clutch and revving the engine. Shifting became very notchy. Before and after I ran Rotella 15W40, and that oil did not cause shifting to behave this way.
Code:
MAKE/MODEL: Suzuki GS500E
FUEL TYPE: Gasoline (Unleaded)
ADDITIONAL INFO: 2000
OIL TYPE & GRADE: Castrol 4T 10W/40
OIL USE INTERVAL: 3,500 miles
Universal averages show typical wear levels for this type of engine after about 1,600
miles on the oil. The only metal higher than universal averages is copper. That does
show some extra wear at brass/bronze parts, but it's not high enough to show a problem.
A little fuel was present and that probably thinned the viscosity some. The good news is
that neither the fuel nor the thin viscosity did any harm, though fuel at this level can
show a fuel system issue. The TBN was 3.5 showing active additive for a longer run, but
stay at around 3,000 miles to monitor fuel dilution.
MI/HR on Oil 3,500
MI/HR on Unit 25,500
Make Up Oil Added 0.5qt
Sample Date 03/01/13
Unit Avg Univ Avg
ALUMINUM 8 15
CHROMIUM 0 0
IRON 22 35
COPPER 23 18
LEAD 4 11
TIN 0 3
MOLYBDENUM 1 44
NICKEL 0 1
MANGANESE 0 1
SILVER 0 1
TITANIUM 0 0
POTASSIUM 3 2
BORON 42 73
SILICON 4 9
SODIUM 3 19
CALCIUM 1050 1928
MAGNESIUM 1227 271
PHOSPHORUS 1053 913
ZINC 1293 1067
BARIUM 0 1
SUS Viscosity @ 210°F 61.6
cSt Viscosity @ 100°C 10.68
Flashpoint in °F 335
Fuel % 2.0
Antifreeze % 0
Water % 0
Insolubles % 0.2
TBN 3.5
The fuel dilution might have come from the short trips I had been doing with the bike - my commute was 7 miles each way and I didn't have much time for longer pleasure rides. Also, I did leave the manual petcock open once, which flooded the airbox a bit.
Subjective impressions: felt like the oil had thinned out, fast. Within a few hundred miles it became quite hard to shift into first from a stop, without messing with the clutch and revving the engine. Shifting became very notchy. Before and after I ran Rotella 15W40, and that oil did not cause shifting to behave this way.
Code:
MAKE/MODEL: Suzuki GS500E
FUEL TYPE: Gasoline (Unleaded)
ADDITIONAL INFO: 2000
OIL TYPE & GRADE: Castrol 4T 10W/40
OIL USE INTERVAL: 3,500 miles
Universal averages show typical wear levels for this type of engine after about 1,600
miles on the oil. The only metal higher than universal averages is copper. That does
show some extra wear at brass/bronze parts, but it's not high enough to show a problem.
A little fuel was present and that probably thinned the viscosity some. The good news is
that neither the fuel nor the thin viscosity did any harm, though fuel at this level can
show a fuel system issue. The TBN was 3.5 showing active additive for a longer run, but
stay at around 3,000 miles to monitor fuel dilution.
MI/HR on Oil 3,500
MI/HR on Unit 25,500
Make Up Oil Added 0.5qt
Sample Date 03/01/13
Unit Avg Univ Avg
ALUMINUM 8 15
CHROMIUM 0 0
IRON 22 35
COPPER 23 18
LEAD 4 11
TIN 0 3
MOLYBDENUM 1 44
NICKEL 0 1
MANGANESE 0 1
SILVER 0 1
TITANIUM 0 0
POTASSIUM 3 2
BORON 42 73
SILICON 4 9
SODIUM 3 19
CALCIUM 1050 1928
MAGNESIUM 1227 271
PHOSPHORUS 1053 913
ZINC 1293 1067
BARIUM 0 1
SUS Viscosity @ 210°F 61.6
cSt Viscosity @ 100°C 10.68
Flashpoint in °F 335
Fuel % 2.0
Antifreeze % 0
Water % 0
Insolubles % 0.2
TBN 3.5
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