a lot of new vehicles are going route of 0w-20 including my toyota tundra for years now as well as some newer ATVs being 0w-40 synthetic oils. I ran 0w-40 even in my older atvs no issues.
I really think some of us, including myself, over analyze oil weights when we should be worrying more about longevity between oil changes more so. I for one will not go over 5K miles between oil changes in any of my vehicles or cycles, etc.
engines today and mainly the oil are all designed for 8-10k oil changes some even longer under certain conditions. Suggest, one used oil analysis and u will see this is true. or peruse UOAs on
www.bobistheoilguy.comhere was my testing at 4200 miles, I re-tested at 8k miles after 2yrs and it came back still good for use for at least another 4k miles.
u can see from my other UOA that metal wear has gone done indicating that the engine is finnaly breaking in or getting close to it, whereas metals should stabilize.
OIL REPORT from Blackstone Labs
MAKE/MODEL: Honda Motorcycle GL 1500 6-cyl
FUEL TYPE:
ADDITIONAL INFO: OEM Air Filter
OIL TYPE & GRADE: Amsoil 10w30/30HD Diesel Oil
OIL USE INTERVAL: 08/12/09 to 08/06/10 Temps 25F to 100F in that time. Pure1 oil filter PL14459
BLACKSTONE COMMENTS: Universal averages show typical wear metals for an oil from this Honda GL 1500 after about 6,100 miles on the oil. Your oil was run 4,258 miles and wear metals read around those averages. All metals were in correct balance, which is a good indication that internal parts are wearing normally. This viscosity read on target for 10W/30 and was free of any contaminants. The TBN was still strong at 7.1, lots of active additive left. A TBN of 1.0 is low. Insolubles, which are solids formed by heat and use, were good at 0.4%.
Try going 6,000 miles next time.
Miles on Oil 4258 Universal
Miles on Unit 26247 Avgs
Sample Date 08/06/10
ALUMINUM 6 5
CHROMIUM 1 1
IRON 18 22
COPPER 11 8
LEAD 4 4
TIN 1 1
MOLYBDENUM 3 59
NICKEL 0 1
MANGANESE 1 0
SILVER 0 0
TITANIUM 0 0
POTASSIUM 3 2
BORON 51 68
SILICON 13 9
SODIUM 5 7
CALCIUM 3457 2293
MAGNESIUM 27 193
PHOSPHORUS 1080 940
ZINC 1279 1131
BARIUM 0 0
SUS Viscosity @ 210̊F 58.8
cSt Viscosity @ 100̊C 9.89
Flashpoint in ̊F 375
Fuel % <0.5
Antifreeze % 0.0
Water % 0.0
Insolubles % 0.4
TBN 7.1
My Comments: Very happy with this oil. Especially how it performed considering the wide temperature range and being in service for 1 yr.
During colder temperatures radiator was blocked 95% to maintain 180F water temperature and 185-195F oil temperatures.
This is my number one oil choice now.
cst 9.30-12.49 per the charts for 30w.
Amsoil list 10.5 cst
a previous post of a VOA was 9.9 cst
so it looks like this oil didn't shear at all at 9.89 cst
during this 1yr time frame. always had at least 5 minute warmup in winter and due to all the snow this past winter the bike sat not running for about 1 1/2 months.
when this oil was only rated at 30w it met the wet clutch specs like allison.
Very impressed with the TBN after 1yr.
Smoothest shifting oil even now after 1yr I have ever used.
will sample again at another 4k miles.