Motorcraft 15-40 diesel oil in HD 1340 Evo

Messages
701
Location
Southland (Arkansas)
Blackstone Labs..MC 15-40 Diesel 3.5 Qts with 7.5 ozs of Valvoline [email protected] 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

Messages
19,252
Location
Elizabethtown, Pa
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 [Frown] Without the dilution you are probbly O.K. with this viscosity.
 
Messages
2,602
Location
The Tropics of Antartica
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 [Smile] 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 .
 
Messages
1,539
Location
Shippensburg, PA
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! [Smile]
 

Al

Messages
19,252
Location
Elizabethtown, Pa
quote:
Originally posted by SKUNKY: Question: What is in the fuel that causes the Iron to increase??
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

Thread starter
Messages
701
Location
Southland (Arkansas)
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??
 
Messages
2,602
Location
The Tropics of Antartica
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
 
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