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Possibly the ultimate Harley oil? #4975827 01/11/19 09:13 AM
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Reltor Offline OP
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This is made by Lucas in a conventional and Semi-Synthetic from what I have seen. It is pricy but the ZDDP levels are super high. I may try it in the spring. My bike is older...no cats.

https://lucasoil.com/products/marin...xtreme-duty-marine-sae-20w-50-engine-oil

The conventional is around $10/qt and the semi-syn around $17/qt

Re: Possibly the ultimate Harley oil? [Re: Reltor] #4975835 01/11/19 09:30 AM
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Blkstanger Offline
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Harleys don't need a ton of ZDDP. They have roller bearings everywhere. And roller lifters. And stock Harley engines are far from "high performance". I ran Redline 20w60 for many years in both my Big Twin Harleys. Had 80,000 miles on the Black one when it was totaled.

two bikes.jpg

99 Jeep WJ 4.7 200,000mi. Maxlife 10w30, Fram Ultra.
Re: Possibly the ultimate Harley oil? [Re: Reltor] #4975857 01/11/19 10:03 AM
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Diesel12 Offline
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Not a bad looking oil except take a look at the CCS Viscosity at -15C its 9500cp. i bet that oil has a crappy pour point thats why they dont post it.

Compare it to Schaeffer 20w-50 V-twin which the same test at the same temp resulted in 3500cp. Also has a stable pour point of -41F.

Here is the data sheet for Schaeffer V-twin 20w50 https://www.schaefferoil.com/documents/229-707-td.pdf


Last edited by Diesel12; 01/11/19 10:03 AM.

1998 Dodge Neon-Rebuilt 2.4L-Schaeffer 10w-30
2014 Dodge Durango 3.6, 66K- Schaeffer 10w-30
2002 Ram 2500 Cummins 125K- Schaeffer 5w-40
2008 Dodge Avenger 232K Schaeffer 10w-30
Re: Possibly the ultimate Harley oil? [Re: Reltor] #4976225 01/11/19 03:36 PM
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Linctex Offline
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Mystik 15W-50 is what i get locally (and VERY inexpensively) and the it has been giving OUTSTANDING used oil analyses on here

[Linked Image]


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Possibly the ultimate Harley oil? [Re: Diesel12] #4976273 01/11/19 04:32 PM
Joined: Apr 2018
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Imp4 Offline
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Originally Posted by Diesel12
Not a bad looking oil except take a look at the CCS Viscosity at -15C its 9500cp. i bet that oil has a crappy pour point thats why they dont post it.

Compare it to Schaeffer 20w-50 V-twin which the same test at the same temp resulted in 3500cp. Also has a stable pour point of -41F.
And tell me again why you care about low temperature performance in this application????

I think what you have stated here may be both true and irrelevant.


2001 Mitsubishi Galant 2.4 - 165k+
Grandma's creampuff...
Re: Possibly the ultimate Harley oil? [Re: Reltor] #4976318 01/11/19 05:43 PM
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Jarlaxle Offline
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Maybe because some people do actually ride in cooler weather? Especially in Michigan.


1979 Coupe de Ville, 542 stroker, 15W-40 Super Tech, Delco
2011 Crown Vic P71, 5W-20 Super Tech, Super Tech
2011 Sportster 883, 20W-50 Mobil, HD black
Re: Possibly the ultimate Harley oil? [Re: Reltor] #4976415 01/11/19 07:30 PM
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Kamele0N Offline
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Would not anything with more than 1200 ppm ZDDP cause impurities /sludge in the engine?

Last edited by Kamele0N; 01/11/19 07:31 PM.

2008 Toyota Yaris 1ND-TV 1.4 D4-D Tech9 5W30 C3 VW 504/507
1997 Toyota Landcruiser KZJ95 3.0 TD Elf Evolution NF900 5W40
Re: Possibly the ultimate Harley oil? [Re: Jarlaxle] #4976505 01/11/19 09:12 PM
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Imp4 Offline
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Originally Posted by Jarlaxle
Maybe because some people do actually ride in cooler weather? Especially in Michigan.

Call me back when you're riding at below 0°C.
Otherwise...


2001 Mitsubishi Galant 2.4 - 165k+
Grandma's creampuff...
Re: Possibly the ultimate Harley oil? [Re: Reltor] #4976700 01/12/19 06:46 AM
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Jarlaxle Offline
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My coldest was 3 C a couple years ago...bike was fine. (Oil was 10W-40.) I suspect my current bike (with conventional 20W-50) might not be.


1979 Coupe de Ville, 542 stroker, 15W-40 Super Tech, Delco
2011 Crown Vic P71, 5W-20 Super Tech, Super Tech
2011 Sportster 883, 20W-50 Mobil, HD black
Re: Possibly the ultimate Harley oil? [Re: Reltor] #4976985 01/12/19 01:08 PM
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DoubleWasp Offline
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That's a high performance Marine oil. It's made more like an SAE 50 for shear resistance. They don't care about cold weather operation, because a high performance boat is not going to be subjected to that.

Pour point depressants are usually left on the shelf.


07 Lincoln Navigator M1 0w-40/FU
68 Charger R/T / Supercharged 440 VR1/DBL7349
07 Ram 3500 4x4 / Cummins 6.7 /DBL7349
17 Maserati GranTurismo Cabrio
Re: Possibly the ultimate Harley oil? [Re: Reltor] #4980719 01/16/19 06:52 AM
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alarmguy Offline
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Hard to comment on the OP as there is no mention of what year and model his Harley is.
Being there are so many, for me, I try to stick to the recommended type of oil.


14 Road King (current)
08 VStar 1300 Tourer
07 Suzuki C50
Re: Possibly the ultimate Harley oil? [Re: alarmguy] #4987655 01/22/19 03:18 PM
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Reltor Offline OP
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Originally Posted by alarmguy
Hard to comment on the OP as there is no mention of what year and model his Harley is.
Being there are so many, for me, I try to stick to the recommended type of oil.


2002 Dyna Wide Glide 88cu - Carbureted, Cams, upgraded oil pump etc. Have always Run 20w-50, lately Lucas Synthetic 20-50W for motorcycles.

Not sure about the high ZDDP levels causing any sludge

I do ride when it's pretty cool, but if its near freezing I usually leave a warm garage and hope to return to it within the day 90% + of my riding is 50 degrees and up.

I think I am going to try it in the engine and primary, if my local auto parts can get some from the distributor.

Last edited by Reltor; 01/22/19 03:18 PM.
Re: Possibly the ultimate Harley oil? [Re: Reltor] #4990788 01/25/19 07:55 PM
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shanneba Offline
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Mobil 1 V-twin 20w-50 is only $11.99 at Advance Auto near me.
https://shop.advanceautoparts.com/p...2630/8026542-P?searchTerm=Mobil+1+V-twin

It has 1600 ppm phosphorus and 1750 ppm zinc
Mobil1 1 Product Guide


Have you considered the Shell Advance Ultra 4T 15W-50 Synthetic Motorcycle Engine Oil?

Full syn and $12.99 a quart at Advance Auto.

https://shop.advanceautoparts.com/p/shell-advance-ultra-4t-15w-50-synthetic-motorcycle-engine-oil-1-liter-550037980/11438356-P?navigationPath=L1*14926%7CL2*15035

Last edited by shanneba; 01/25/19 07:57 PM.

2003 BMW 330Ci
2013 HD Sportster XL1200C
Re: Possibly the ultimate Harley oil? [Re: Linctex] #4991143 01/26/19 07:53 AM
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alarmguy Offline
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Originally Posted by Linctex
Mystik 15W-50 is what i get locally (and VERY inexpensively) and the it has been giving OUTSTANDING used oil analyses on here

[Linked Image]



^^ What he says^^


14 Road King (current)
08 VStar 1300 Tourer
07 Suzuki C50
Re: Possibly the ultimate Harley oil? [Re: Reltor] #4991306 01/26/19 10:52 AM
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BigCahuna Offline
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Which recommendation are you guys referring to?. The one that says to use diesel oil if Harley oil isn't available, or the one that says to change it out as soon as possible and use Harley's oil?. It says both in the manual.,,,

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