1966 Crown Coupe, 2016 200 S AWD, 1962 Lark Daytona V8.
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When it goes below 20 degF, the NY highway dept uses Calcium Chloride. It will burn skin also.
The double layer cover is called 'antiphon' to reduce noise. The valve covers and oil pan commonly use it.
http://www.antiphon.se/noise-reduction/antiphon_mpm_engelsk09_id340.pdf
It is best to replace it, you wouldn't want to damage a transaxle because of low fluid. It also makes a mess in the driveway.
The double layer cover is called 'antiphon' to reduce noise. The valve covers and oil pan commonly use it.
http://www.antiphon.se/noise-reduction/antiphon_mpm_engelsk09_id340.pdf
It is best to replace it, you wouldn't want to damage a transaxle because of low fluid. It also makes a mess in the driveway.