Motorcraft 15-40 diesel oil in HD 1340 Evo

[SKUNKY]

Blackstone Labs..MC 15-40 Diesel 3.5 Qts with 7.5 ozs of Valvoline EP...@ 2000 total miles on oil..1000 miles around home...1000 in Florida..80* + weather ...in city and highway ..a hard run to the Keys from Daytona..
this is a modified HD 1340 Evo motor in a dresser(Bagger)..oil cooler, S&S oil pump, roller rockers, Accel air filter, Wix oil filter, heads shaved .057, lower end completely stock..the bike never showed signs of overheating I:E pinging or stalling..it ran real good...
REPORT;
ALUMINUM 6
CHROMIUM 1
IRON 18
COPPER 5
LEAD 2
TIN 0
MOLY 142
NICKEL 0
MANGANESE 0
SILVER 0
TITANIUM 0
POTASSIUM 0
BORON 67
SILICON 7
SODIUM 4
CALCIUM 3341
MAGNESIUM 63
PHOSPHORUS 1076
ZINC 1275
BARIUM 0

TBN 9.3
SUS 70.5
FLASH 350
FUEL 1.5
INSOLUBLES 0.3

COMMENTS: My main concern was running a 15-40 oil when a 20-50 oil is recomended...what ya think??? I also have a S&S carb on the bike that I run a little on the rich side....031 idle jet...70 main jet...Thanks

 

[Al]

Well the numbers seem O.K. -Iron is high though. That is probably due to the fuel which is too high. Its less than 2% but its still too high-look at the flash point=to low

Without the dilution you are probbly O.K. with this viscosity.

 

[Motorbike]

For the money and ambient , rodded up motor it did good . It sheared about 2 cSt's but bikes do this kinda thing to mortal engine oils

I see that oil has been reformulated betting soon it will carry the CI-4+ label .

Knock it for low mag and boron compared to the last version but look at the crazy high TBN .....and thats Blackstones method .

 

[novadude]

I like the TBN.

I am running this oil in a carbed Chevy 327 that sees occasional summer use, and gets stored all winter. I am sure the old tech carburetor puts more crap into the oil, particularly since I never got around to hooking up a choke, making cold starts a bit rough. I am thinking a high TBN oil is just what I need!

 

[SKUNKY]

Question: What is in the fuel that causes the Iron to increase??

 

[KW]

It dilutes the oil. Not very technical am I.

Where in AR are you? I'm just outside of Jacksonville.

 

[SKUNKY]

Fayetteville....GO HOGS...and I'm shouting

 

[Al]

quote:

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Originally posted by SKUNKY:
Question: What is in the fuel that causes the Iron to increase??

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Well there may be other things, but the book answer is that it reduces viscosity and thereby film strength. It also dilutes the additives and decreases the base# , which causes more wear and corrosion.

 

[SKUNKY]

Ok...I get it...I was a little retarted the other day when I asked the question..do you think that the Synpower would seal the rings better then the VEP did??

 

[Motorbike]

It's doubtfull there would be much difference .

The fuel is not helping seal the rings much though but fuel in oil with bikes go hand n hand it seems .You don't have much fuel in there compared to some analysis's I've seen though .

BTW , Pennzoil makes a 20w-50 motorcycle oil not many people know about from what I've seen .

19 bucks for a 12 quart case is good pricing on it IMO and worth a try .Every thing else they make is good stuff guessing the bike oil is great too .

They make a 10w-40 bike oil as well

 

[SKUNKY]

thanks Motorbike...I can get the diesel oil cheaper and since I have to change every 2k or so cause of the fuel I think I'll still use it..