A Core deposit is a form of deposit you pay until returning your old part. If you don't have the core at the time of purchase, you must pay the core charge. That charge is refunded to you when you return the core.

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Designed  to combine what is traditionally two products into one. The coolant scale reads from 20 degrees F to -60 degress F for both ethylene glycol and propylene glycol. The battery scale reads specific gravity from 1.10 to 1.40 and determines the charge state of either recharge, fair or
good. The addition of a scale for Urea (DEF) reads from 30 percent to 35
 percent with a dominant line at 32.5 percent, which is the ratio
required for proper operation of the emissions system. This tool helps
confirm the proper mixture of DEF as well as prevent coolant related

BrandCentral Tools
Part Number3R401
Line CodeCNT
TerminologyEngine Coolant Refractometer
For warranty information please contact Auto-Wares.