1986 BMW K75C - Shell Rotella T6 5W40 - 2504 miles

[audi_guy]

Not a bad report. Did shear to a 30wt. I've got Valvoline VR-1 Racing 20w50 mineral in it now. I'll see how well that works out.

Code:


EQUIP. MAKE/MODEL: BMW Motorcycle 740cc OIL TYPE & GRADE: Shell Rotella T6 5W40

FUEL TYPE: Gasoline (Unleaded) OIL USE INTERVAL: 2504 Miles

ADDITIONAL INFO: 1986



Shell Rotella

T6 5W40 Amsoil 20W50 Castrol 20W50

MI/HR on Oil 2504 4,238 1,450



MI/HR on Unit 19,869 17,365 13,075

Sample Date 6/24/12 07/14/11 11/30/09

Make Up Oil Added 0 qts 0 qts 0 qts

ALUMINUM 2 3 1

CHROMIUM 0 1 0

IRON 6 6 3

COPPER 4 8 3

LEAD 2 2 1

TIN 1 4 0

MOLYBDENUM 50 50 41

NICKEL 1 1 0

MANGANESE 0 0 0

SILVER 0 0 0

TITANIUM 0 0 0

POTASSIUM 0 1 0

BORON 42 23 198

SILICON 16 12 3

SODIUM 5 2 1

CALCIUM 968 3144 1921

MAGNESIUM 1130 28 65

PHOSPHORUS 1090 1166 665

ZINC 1205 1412 789

BARIUM 0 0 0

Values

Should Be*

SUS Viscosity @ 210°F 63.4 65-78 85.6 68.7

cSt Viscosity @ 100°C 11.16 11.6-15.3 16.90 12.62

Flashpoint in °F 360 >375 375 395

Fuel % 0.8
Antifreeze % 0.0 0 0.0 0.0

Water % 0.0
Insolubles % 0.2
TBN 7.3 8.6 7.2

TAN

ISO Code

 

[chubbs1]

You could run the oil a lot longer based on the high TBN of the last UOA's. Excellent wearing engine. Thanks for posting.

 

[toneydoc]

You could easily run that oil out to 5k miles or beyond. TBN is way up there.

 

[ammolab]

I have VR-1 Dino in my 86 K75C now. Second time for that oil in my bike. Everything I put in that BMW shears down at least one grade: M1 TDT, M1 15W-50 and yes..now VR1 20w-50.

Can't say that I have seen any harm though. I am at 140,000 miles now and last time I was under the Cam Cover the cam lobes looked like new and my Compression still checks out to spec.

 

[TDIVersys]

Think I am going to try Shell 5W-40 synthetic on my next oil change on my Kawasaki. Incidentally Kawasaki recommends a change interval of 7500 miles with normal oil. Guess I'm wondering why I need to change it more frequently especially if i am using synthetic.

 

[alarmguy]

5/40 synthetic oils shear down real fast in a shared sump motorcycle.
Faster then any 20/50 dino oil and faster in many cases then the 15/40 Dino HDEO.

 

[alarmguy]

I think you are going to find the 20/50 Valvoline far SUPERIOR to the Rotella T6 ... I wonder if you are getting it tested soon?