Can I use diesel oil in my Harley?

Like a diesel engine, a Harley engine is classified as “heavy duty” use. So, many of the additive packages they put in the oils are very similar. If you're going to do this, our suggestion is to at least use full synthetic 15w-40 heavy duty diesel oil.
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Is it OK to use diesel engine oil in a petrol engine?

The simple answer: Yes, you can use diesel oil in a petrol engine, provided the diesel oil meets the appropriate specifications and viscosity requirements of your engine.
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Can 15W40 be used in motorcycle?

Originally Answered: Can you put 15W40 in a motorcycle? You certainly can but it's not advisable especially with a modern engine and it's close tolerances. There will actually be less lubrication. You certainly can but it's not advisable especially with a modern engine and it's close tolerances.
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Can I use 15W-50 in my motorcycle?

Energy-Conserving Oils

because of its higher viscosity. A higher viscosity oil's resistance to flow is the reason why automobile-specific oils that are not energy conserving have been used successfully in wet-clutch motorcycles without slippage problems. So 15W-50 Mobil 1 works fine in wet clutches.
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Which is better 15w50 or 20w50?

Yes,it would not make much difference. Important thing is to get the last digit,ie 50 correct. First digits are an indication of normal temperature viscosity or in layman terms how easy it would be to start the engine. But like I said it would be fine to interchange 20w50 with 15w50.
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Will CHEAP DIESEL Motor OIL Ruin my MOTORCYCLE? Suzuki DR650 Maintenance



Do you need motorcycle specific oil?

In a nutshell – you should definitely use motorcycle specific oil if that's what your motorcycle recommends, but in a pinch, car oil could work okay.
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What is the best engine oil for motorcycle?

Motul 7100 Synthetic Oil 4T is the best motorcycle oil recommended for all four-stroke motorcycles with catalytic converters. Meets JASO MA, API SL standards. Designed with ester technology for better engine response.
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Will diesel oil hurt a gasoline engine?

Yes, you can use diesel oil in a gas engine, provided the diesel oil meets the appropriate specifications and viscosity requirements of your engine.
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What's the difference between diesel oil and regular oil?

The Viscosity

Generally, diesel engine oil has a higher viscosity and lower-temperature pumpability when compared to gas engine oil. If it was used in gas engines, several issues might develop, such as heat generation, premature wear & tear, and more.
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Is diesel oil the same as petrol oil?

Most diesel engine oils carry a higher specification rating than petrol engine oils and vehicle manufacturers often specify a diesel engine oil be used in a petrol motor. This does not work in the reverse, petrol only engine oils cannot be used in diesels. Some engine oils carry both petrol and diesel specifications.
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Can I use Delo Gold for motorcycle?

This product is not recommended for motorcycle engines.
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Does Rotella T6 have friction modifiers?

Rotella T6 is widely used by motorcyclist without any issues. Since it's marketed for diesel engines it doesn't have the friction modifiers that will damage the wet clutch in a bike, so it's fine to use in a Goldwing. The Rotella T6 meets that spec.
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What is JASO MA rating?

JASO MA – This was the standard for single unit engines where the wet clutch, gearbox and engine used the same oil. JASO-MA oils don't contain friction modifiers. JASO MB – This lower standard was for bikes that use separate oils for the engine, clutch and gearbox (e.g Harley Davidson's and BMW's).
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Can I use car oil in a Harley?

Though it is okay to temporarily use car engine oil in a motorcycle, it's not okay to consistently use it. As I mentioned before, there are some differences between the two oils and due to those differences, a motorcycle will start lacking some vital components it needs from the oil and will start breaking down.
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What happens if you put the wrong oil in a motorcycle?

What happens when you put too much oil in a motorcycle? Adding too much oil to a motorcycle will increase the pressure in the crankcase which in turn forces oil out of the engine and into your intake system. This can cause damage to the engine as well as burn oil in the engine where oil is not supposed to be present.
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Can you put car motor oil in a motorcycle?

Not all oils are created equal. To avoid damaging your motorcycle's engine, we advise that you use motorcycle oil for your motorcycle and car oil for your car. As always, please consult your owner's manual for the correct use.
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Is Rotella T5 JASO MA?

The T6 Synthetic 5W-40 and T5 Dino 15-40 are now rated by Shell as Jaso Ma2.
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What oil can I use instead of Rotella T6?

Technically the proper weight is 5W-40 but many in warmer climates run the 15W-40 without issue. As for a suitable oil other than T6 is a Full Synthetic 5W-40 rated for use in diesel engines. There is a wide variety of available of brand available from Mobil, Valvoline, Amsoil to name a few.
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Does Rotella t4 have friction modifiers?

These oils don't contain any friction modifiers.
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When should I use 20w50?

20W-50 is only used for certain older vehicles or worn engines that require the extra cushioning of a high viscosity oil. Other than that, it really isn't a high mileage oil. This is because 20W-50 is a thicker oil, and the added resistance can cause further engine wear and damage to both newer and older vehicles.
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When should I use 15w-50 oil?

15W-50 has historically been a viscosity recommended for high performance engines, and is used today primarily in motorsports racing where engines are stressed due to high revving and heat.
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Can I use 15w40 instead of 20w50?

20W-50 motor oil is for vehicles with gasoline engines. 15W-40 oil is for diesel applications. The difference between the two grades are just the specifications and for all practical purposes, in older vehicles without variable valve timing, the two grades of oil are interchangeable.
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