Halfords Motorcycle Engine Oil Fully Synthetic 5W/40 - 5ltr
Halfords Motorcycle Engine Oil Fully Synthetic 5W/40 Motorcycle Engine Oil Product Description
Incorporating great value and even greater performance, Halfords Motorcycle Engine Oil Fully Synthetic 5W/40 is specially formulated to care and prolong the life of four stroke motorbike engines.
Halfords offer an extensive choice of other brilliant motorcycle and scooter oil and additives.
Features and Benefits of Halfords Motorcycle Engine Oil Fully Synthetic 5W/40
To check which oil you require for your motorcycle, please click HERE.
- Grade: 5W/40
- Oil Type: Fully synthetic
Ask your questions. Share your answers.
The numbers in engine oil are related to the viscosity, or thickness, of the oil at certain temperature. The difference between 5w40 and 10w40 is that the 5w will flow slightly better at lower temperatures, which is a helpful with the winter we've just had. So 5w is fine when youre recommended 10w40.
But for future reference it wouldn't work the other way around. Using 10w when 5W is recommended could harm your engine as the oil wouldnt flow as it was needed too at lower engine temperatures, ie when the engine is first started, which is when wear is at its greatest.
Hope that helps
A 5W oil will thicken up less than a 10W product as it gets cold. This means that a 5W will move around the engine easier than a 10W in cold (start-up) conditions which in turn means that there is likely to be less wear in the critical first few minutes after the engine is turned on.
Fortunately a 5W40 and a 10W40 will both have approximately the same thickness when running at the normal hot operating temperature.
In practice this means that a 5W40 is generally a very good substitute for a 10W40 (of the same specification) though not the other way round.
The best thing to do is look at your owners manual (or workshop manual for your bike eg Haynes) as that will tell you your recommended engine oil. If you don't have a manual I'd suggest a quick email to your local dealership as they will be able to advise you on not only the recommended weight eg 10w40 but also on whether certain brands are more or less suitable as addatives vary between brands and even oils the same weight will work differently.
I wouldn't advise just google-ing it. Often misinformed people with the best of intentions can cause a lot of problems, make sure you get your answer from someone who knows what they're on about.
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