4 stroke bike oils in cars?

[ChristianReske]

A VOA from Germany of the Liqui Moly "Motorbike 4T Synth 10w-40 Street Race"

https://oil-club.de/index.php?thread/10435-liqui-moly-motorbike-4t-synth-10w-40-street-race/

- 100% PAO
- Extremly high flash point: 250 °C / 482°F.
- Extrem good evaporation loss / NOACK value: 3,7 %
- Should be free of VI Improvers = extremly shearstable
- Contains Bor and moly
- As mentioned, API SN Plus approval

This oil loks like a winner for high reving sport cars. Product data sheet as PDF in english:

https://pim.liqui-moly.de/ws/pi/article/20753?language=en

Maybe also a advantage of Motorcyle oils, but without proof: Motorcyle oils should have more anti foaming additives compared to regular "off the shelf" car oils.

 

[SR5]

Link to related thread
https://bobistheoilguy.com/forums/threads/can-i-use-motorcycle-oil-in-a-gasoline-car-engine.351155/

 

[dlundblad]

The few I’ve seen were API SL rated IIRC so they’re good to go. $10 a quart or so at Walmart. Ouch.

 

[svenson]

https://azupim01.motul.com/media/mo..._Factory_Line_5W-40__en_FR_motul_20210324.pdf

thats a nice candicate for whom is intersted

 

[userfriendly]

Wow.....very interesting oil
KV100 = 18.25 cSt
TBN = 5.69
Noack = 4.1 %
Zn = 956 ppm
Ca = 1356 ppm
Na = 440 ppm
Ti = 36 ppm

That is a very low Noack Volatility, it must be very good base stock. I’m surprised that a SN-Plus oil has so much sodium, it’s usually the other way, but Liqui Moly is a name brand and they know what they are doing, so I’m sure they are correct, probably a more advanced formula. Made in Germany.

I like it, it has a lowish TBN, so I wouldn’t stretch the oil change interval without a UOA to back it up. But with an oil this advanced, who knows, it may have very long legs due to good modern low sulphur fuel and very stable base stock in the oil.

As an oil, I would use it, but it’s way too expensive for my mundane application so I’ll just have to wait for your feedback.

I’m not seeing the robust additive in these motorcycle engine oils people are posting about.
For less than half the price several 15w40s have P1200 and Zn 1300.
Delvac Extreme and Petro-Can Duron are two examples.
One Duron SAE 40 UOA showed Zn @ 1440.
Is motorcycle engine oil overpriced?
Yes, just like anything with a picture of a boat on the label.

 

[Merek]

Liqui Moly Street Race oil carrys a API SN Plus approval.

The Valvoline Full Synthetic 10w40 is also SN rated. I used the Kawasaki conventional to break mine in and then switched to Castro Actevo 10w40 which is a blend but was still experiencing notchy shifting, sometimes when having to stop fast it would get hung up in between gears so you couldn't shift up or down... since running the Valvoline it's been a non-issue for me.

 

[weasley]

Delvac Extreme and Petro-Can Duron are two examples.
One Duron SAE 40 UOA showed Zn @ 1440.
Is motorcycle engine oil overpriced?
Yes, just like anything with a picture of a boat on the label.

Both of those are heavy duty diesel engine oils where higher Zn/P levels are of less consequence than in gasoline engines with catalysts. You can't judge the 'robustness' of an oil on just its elemental content.

 

[userfriendly]

Both of those are heavy duty diesel engine oils where higher Zn/P levels are of less consequence than in gasoline engines with catalysts. You can't judge the 'robustness' of an oil on just its elemental content.

I can. The Duron SAE 40 showed 8ppm Fe after 9,000 miles in a LML Duramax.
Its red headed step sister is Delo 400 SAE 40 with P1,000 and Zn 1,200 according to the pds.
Also “robustness” whatever that means, might be the fact that Delvac 1300 is CK4/SP licensed.
How many overpriced motorcycle and marine engine oils can claim that?
The best friction enhanced engine oil for motorcycle wet clutch applications might be Caterpillar drive train oils (TO-4) in the desired grade.

 

[weasley]

I can. The Duron SAE 40 showed 8ppm Fe after 9,000 miles in a LML Duramax.
Its red headed step sister is Delo 400 SAE 40 with P1,000 and Zn 1,200 according to the pds.
Also “robustness” whatever that means, might be the fact that Delvac 1300 is CK4/SP licensed.
How many overpriced motorcycle and marine engine oils can claim that?
The best friction enhanced engine oil for motorcycle wet clutch applications might be Caterpillar drive train oils (TO-4) in the desired grade.

You can't get "TO-4 in the required grade", Cat TO-4 oils are monograde. TO-4M allows for multigrade at approximately 10W-40. If you're going off-piste, why not an agri STOU?

Ultimately, the best friction enhanced engine oil for motorcycle wet clutch applications is motorcycle engine oil. Whether you want to pay for it or not is another thing.

 

[userfriendly]

You can't get "TO-4 in the required grade", Cat TO-4 oils are monograde. TO-4M allows for multigrade at approximately 10W-40. If you're going off-piste, why not an agri STOU?

Ultimately, the best friction enhanced engine oil for motorcycle wet clutch applications is motorcycle engine oil. Whether you want to pay for it or not is another thing.

Which required grade did you have in mind?
Since 1776 we’ve done pretty much what we want out here in the colonies in addition to coming to your rescue and saving your bacon on at least two occasions.
Userfriendly will continue to use Caterpillar drivetrain oil in motorcycles and V8s with heavily loaded flat tappet camshafts despite other options.
Like Lake Speed said; wear and friction are two different things. I’m looking for friction in both applications. In one for the clutch and the other to spin tho lifters.

 

[oil pan 4]

Those bike motor oils are kind of expensive and are overkill for a passenger car. SN rating oil really isn't bad, just avoid SM and you're fine.