When parking on a hill, apply emergency brake before shifting to park. This puts the force that prevents the car from rolling down the hill on the brake and not the transmission.
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Recent Optima batteries are made in Mexico, not U.S., and quality dropped (while price increased). Avoid Optima batteries.
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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.
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Check your car model for recalls.
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Boslla LED Headlight Bulbs are spendy but look very effective and adjust to visibility conditions. Very cool. https://amzn.to/2UQTjAZ
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Silicon lubricant for window rubber and Nu Finish polish in place of RainX for window for beading water.
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https://amzn.to/2VDFYwX
Advises against using quick struts. Not made well.
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Scotty recommends this product for keeping rubber parts on car supple.
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Hybrid coolants are best, like the one used by Toyota.
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