Absolutely not.Use exactly what the manufacture recommends and nothing else.
You should use 5w30 by what the oil fillcap shows..
10w30 or 10w40
10w40 or 10w30 class J motor oil
10w30 in the summer and 10w40 in the winter.
10w40 is a thicker oil than 5w30. I would only use 10w40 in an older motor in the summer, if the motor was using too much 10w30. The thinner oil will not have the higher pressure. Pressure that this motor needed.? I would go back to the 10w40 and see if the knocking stops...the damage may already be done.
10w30 weight unless it is using oil. In that case use 10w40.
You can, but I would not recommended. Due to it's not a new truck and high mileage. You can put 10W30 or 10W40 instead. I think the 5W30 may hurt your engine.
Yes
yes but not synthetic that's a hole other ball game 10w40 10w30 i like to use 10w40 in the wormer months and10w30 in the colder
conventional motor oil .10w30/10w40.hot weather conditions,you can use 20w50
conventional motor oil .10w30/10w40.hot weather conditions,you can use 20w50
I would use 10w30 and for high mileage 10w40 would work best
Lol 10w30.. I prefer 10w40 when it comes to higher milage cars