Is 15W50 thicker than 10W40?

These viscosity index numbers are used to describe the relative thickness of oils for comparison. The 15W50 has numbers higher than the 10W40, therefore the 15W50 is thicker both at ambient winter test and engine operating temperatures.

What happens if I use 15W40 instead of 10W40?

A 10W40 oil will be thicker in the cold than 15W40 oil, but they will have the same viscosities at higher temperatures. Hence, a car will start with fewer cranks when holding oil of a lower winter weight. 10W40 oil will perform cold starts better than 15W40 oil.

What’s the difference between 10w50 and 15W50?

The difference between 10w50 and 15w50 is negligible. Whichever oil weight is available at your local auto (or moto) parts store will work fine.

Can you put 15W40 in a motorcycle?

You should not use truck oils in your bike, especially something like an R1. If you”re going to run the bike hard and hot for long stretches, like on a track, then you need to use something equivalent to Motul 15w40 (or even 15w50) that has been specially formulated for bikes.

Can I use 15w40 instead of 15W50?

The answer is no. 15w-50 is a more suitable engine oil for your Royal Enfield than 15w-40. As 15w-50 is the recommended viscosity grade for the Twin Spark engines that are used in their models. Both have the same viscosity but 15w-50 is more resistant to higher temperatures than 15w-40.

Is 10W thinner than 15w?

While the viscosity of a heavy duty engine oil accounts for its contribution to fuel economy, it is the composition of the base oil and additives that protect your engine from wear, soot and acid. Since 10W-30 is thinner than 15W-40, its film strength can be weaker and it can be more prone to oxidation.

Is 15w40 good for bike?

It is sold as diesel and heavy equipment oil, but the certifications include JASO MA and MA2, so it works fine in motorcycles.

Which is better 15w40 or 15w50?

Yes, the 15w-50 oil’s viscosity is more than the 15w-40. 15w-50 will perform better due to high viscosity at high temperature than 15w-40. Moreover, these grades are considered multigrade oils which perform well no matter the seasons or conditions they are exposed to.