SAE 10w30
For an aircooled VW Beetle, use Castrol GTX2. It has the right viscosity.
In my beetle I run SAE30 oil in winter, SAE40 in summer. I change oild religiously at 3K minle intervals without fail. Aircooleds don't seem to like multi-viscosity oils. If it's below freezing out the SAE20W oil is called for.
hi brooklyn, the viscosity of motor oil is how quickly it flows
Motor oil typically has greater viscosity than olive oil. Viscosity is a measure of a fluid's resistance to flow, and motor oil is designed to have a higher viscosity in order to protect the engine's moving parts at high temperatures and speeds.
Low viscosity oil flows easier when it is cold but become thinner when it is hot.
olive oil
decreased temperature
5w30
SAE 10W30
Not usually
I understand you can use the same oil viscosity in both motor & transmission on the 2008 harley roadking!
A motor oil with a high viscosity (resistance to flow) like SAE 50, will be your greatest density motor oil. Low viscosity like SAE 20 will have the least density.