In NASCAR, do all the teams have to use the same motor oil, coolant, etc?

May be...

High Quality H2O

i would think they use whatever sponsors them, not all use the same as eachother

I know that all the teams use the same tires, and other parts (like restrictor plates and shocks) are mandated and handed out by NASCAR.

Yes because what ever sponser nascar has for the time being is what they all use so they keep the sponser happy.

no

Most teams will use whatever oil they find to be best through testing. Even if it's different from the sponsor. I used to work for a team sponsored by Valvoline (not a NASCAR team) and we'd take the labels off Red Line bottles and put Valvoline stickers on 'em.

no

no they use whoever sponsors them or who they like.

They choose their own oil. Water is the only coolant allowed.

No, they use whatever their car company supplies. That's why Tony Stewart is crying.