My motorcycle forks use 10w oil if I used 15w what would happen?.

SOURCE: KX 125 (2003) motorcycle

its 120 mm or 4.7 inches from the top of the fork
Some measure the oil quantity and fill the fork up, some fill the fork up and measure the oil level. The most correct method is to measure the level, I guess, but many guys measure in quantity.. both ways work well.

SOURCE: Fork oil level: 2006 KDX 200

This all depends on what size forks you have, but a good rule of thumb is 120ml. After that then what you want to do is to ride the bike and make adjustments to your front end until your liking.

SOURCE: Fork oil capacity and density for Honda GB400

Hi there!

you need a 15W30 grade of .48 liters on each fork. Normally, i go .5 liters on each fork. Make sure your forks are clean before replacing its fork fluid.

-levibit-

Harvey N Tawatao

• 3854 Answers
• Posted on Jul 23, 2009

SOURCE: 2010 Vibe Type & Quanity of Eng Oil

The 5-30W gives the oil a better heat range, so when you go to Florida, the engine oil keeps it's viscosity better.
The 5-W20 has a lower heat range and is great in the upper states and canada where the temperature is not as hot as Florida or Texas.
The 0-W20 is even better if your in the colder climate like Alaska so the oil is not that thick, and when you have the start the engine first thing in the morning, the oil can move quicker to the upper part of the engine. 
Best thing is no matter what oil you use, just as long as you follow the recommended oil change duration. Your going to be fine and have a long lasting engine and also make sure you warm up the engine first before running it hard to have the piston and cylinder walls expand the same time. As you run the engine hard when it's cold, the pistons expand quicker then the cylinder walls and after a few years. The pistons and cylinder walls will have to much play and you get piston slaps till the engine warms up. 
Good luck and hope this helps and the 5-W30 is more forgiving if you go over a few miles between oil changes. 

SOURCE: fork oil

turn the bike up side down