Hey thx man, 👍
Now not wanting to turn this into a sporty thread,

What’s a high P and ZN oil good for primary and transmission duties , As Mobil 1 takes care of the engine.

Wiz 🍻

 

its been awhile since I read the owners manual but I seem to remember it reading to use only "HD" branded oil but if you are not close to an HD dealer you could use diesel engine oil in a pinch but must change it too HD branded oil as soon as possible.

Now of course HD is going to tell you to use only their oil but is anyone running diesel engine oil?

 

Sure, lots of people run Rotella, etc......

 

Maybe a subject for a different discussion - but does oil break down? I don’t get to ride as much as I’d like and I’d hate to keep oil around that has broken down and lost some of its effectiveness.

Of course when the zombie apocalypse happens we won’t care Iif the oil has “expired”

 

[QUOTE=SkyMaster1;18115165]its been awhile since I read the owners manual but I seem to remember it reading to use only "HD" branded oil but if you are not close to an HD dealer you could use diesel engine oil in a pinch but must change it too HD branded oil as soon as possible.


Don't drink the kool aid.

Wiz 🤪

 

I'm pretty sure they use the wording "recommend" rather than "require", that you use HD branded oil....

If they "required" HD branded oil, it would be in direct violation of the "Magnuson-Moss Warranty Act" and they would be required to supply you with the required branded oil for free during your warranty period.

Funny, all the discussions of the MM act on forums, reference to warranties, are usually incorrect, because they focus on the use of "aftermarket performance parts". However, requiring a certain "brand" of product to maintain warranty is the main focus of the MM Act..... and is at the core of its existence....

They can require an oil with a certain specification (API rating), but they cannot require a certain brand (manufacturer) of oil....

FWIW.... because of the higher compression, heat, and blow-by of diesel engines, a diesel oil usually is a very good oil with a superior additive package, to combat those extreme operating conditions....

 

Stored on the shelf, oil doesn't break down, but it can evaporate of the lighter oils, leaving you with a thicker oil and even finally turning into a gooey jelly. This takes numerous decades to happen. May not be as likely in the plastic jugs we use today. Where I've seen it, it was in the cardboard quart cans.

So while technically possible, you're not going to run into it being a problem.

 

Just had my 15k service ( I know slacking on the mileage) and the dealer used Syn3 in all 3.

 

Can you blame them? If they can get people to buy their overpriced oil, why not.

I have always changed my own oil, trans fluid, and primary lube. I also change my own tires, forks, brake pads, and almost everything else in the service manual. I’ll let them do other stuff like flush the brakes and clutch every two years, and occasionally let them look it over before a long road trip. But I absolutely refuse to pay them to change the fluids. I buy a filter and o-rings and go somewhere else for my lubricants. You never know what is used and if it’s done right unless you do it yourself. But sometimes you just have to trust them.

 

I don’t put motor oil in a transmission. I wouldn’t put gear oil in motor...