I have 2008 honda CRF the engine oil and transmission oil call for 10w30 is that what i should really use?

Question

some people i race with are telling me to use a heavier oil to keep my engine safe. what do you say?

Answer 1

yes if u use a lower kind it will mess up ur gear box.

Answer 2

I think you would be better asking in the motorcycle section of the cars and transportation.  but first you should re- read the instructions.  engine oil and gear oil are 2 different oils. the 10w 30 are temperature levels  -10 degrees to +30 ambient temperatures. you need a different visquosity for your gearbox.

there are a lot of good mechanics in the cars& transportation > motorcycles..  re post this question there.