New answers tagged diy
Definitely alloy drink can or other thin sheet metal as it is not compressible and is not affected by water, oil or grease.
Use a car paint sealent (polymer based) to protect the paint for the whole season (it lasts up to 5 months without reapplying). Wax or polish will only last a month before it fades away. I recommend AMMONYC skin but any paint sealent will do the job (menzerna or meguiars have good products aswell
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