Here is my UOA of GN4 from 2007. The formatting isn't very good but the data is all there.
I have 3 UOAs here including the GN4 on the far right.
Rick
1999 Honda ST1100
Water-cooled V4
Shared engine/trans. oil, wet clutch
Blackstone Labs
Oil...............Delo15W40.....GC0W30.........Honda 10W40
Filter............PL14610........3423 Bosch.....1536 Napa Gold
Total Miles....65,033..........73,008...........81,081
Miles on oil....8,070..........7,975.............8,073
Time on Oil.....3 1/2 mon.......5 1/2 mo....4 Mo
Make up oil......0................0................0
Aluminum.........11.............13...............12
Chromium.........1................1................1
Iron................27.............41..............25
Copper............4...............4................3
Lead...............3...............2................3
Tin.................0...............0................1
Moly..............231............36..............50
Nickel.............0...............0................1
Manganese......0..............1.................0
Silver..............0...............0...............0
Titanium..........0..............0................0
Potassium........0..............3................2
Boron..............74.............11.............124
Silicon.............13.............14.............12
Sodium.............5..............175...........58
Calcium............3471.........2290.........1988
Magnesium........10............456...........65
Phosphorus.......1211.........906..........815
Zinc.................1499.......1140.........1053
Barium.............0..............0..............0
Flashpoint F......405..........410...........390
Fuel................ Antifreeze........0................0.35..........?
Water.............0.................0..............0
Insoluables......0.1............0.3...........0.2
SUS
[email protected]
TBN.................5.4..........7.2...........3.6
Comments:
Honda 10W40 GN4 oil
1536 is a Napa Gold automotive oil filter
No oil additives used. FP3000 in the gas.
Still have a little sodium from the lead substitute that I was running last OCI & start of this one.
I installed a new Honda OEM air cleaner for this run. It didn't change the silicon level.
This is the first oil that showed consumption in this engine. I didn't need to add any oil but the oil level dropped from the Max to the Min range.
The Motorcycle-spec. Honda oil is OK but doesn't impress me.
Compared to the Delo the TBN, flashpoint, and add-packs are lower. The Honda oil also sheared down quit a bit.
The wear metals are similar to the Delo, but I don't see any reason to run this oil again especially at twice the price of Delo.