Recent Optima batteries are made in Mexico, not U.S., and quality dropped (while price increased). Avoid Optima batteries.

Ethanol is common additive, but should not be more than 10% or can damage the engine. You can buy a device to measure ethanol content.

When jump starting car, let the running good car charge the dead car for 10 minutes, then turn OFF the running car, then try to start the dead car. Don't keep the good car running while you try to start the dead car--that could mess up computers, etc.

Silicon lubricant for window rubber and Nu Finish polish in place of RainX for window for beading water.

1. Goo Gone: https://amzn.to/2I0AQ2P
2. Nu Finish Polish: https://amzn.to/2G0fnVn
3. Meguiars Soap: https://amzn.to/2YPBBAY

If car overheat, check that radiator holding pressure, especially the cap!