Starbrite Premium -100 Engine and Water System Marine Antifreeze (Gallon)For the best premium protection in even the most treacherous conditions, the choice is clear. Starbrite Non Toxic Antifreeze stands up to harsh cold to -100F (-73C), protecting your engine and drinking water systems. Its premium additive package prevents corrosion of aluminum, copper, brass and solder and never damages important rubber, seals or hose materials. Starbrite Non Toxic Antifreeze is 3X-died in blue-green to provide unrivaled blow-through visibility. Formulated with virgin, non-toxic USP-grade ingredients, this product is alcohol-free to reduce evaporation and maintain the same concentration to offer steadfast protection during storage. Ready-to-use or be diluted. Simply follow the directions on the label for proper dilution ratios.For burst protection at up to -100F (-73C), with freeze protection within a range of -58F to -63F (-50C to -52C), you can be certain Starbrite Non Toxic Antifreeze will be up to the task. When testing with a refractometer or hydrometer freeze point readings on the PG scale will range from -58F to -63F. Note: The burst point of PVC pipes used in most drinking water systems is about -10F (-23C).Features: Protects water systems & engines from freeze ups during storage.; Use in boats, RVs, vacation homes, pools.; Safe for copper, brass and all types of plastic.; Contains corrosion inhibitors to protect all metal engine components and seals.; The most effective and safest way to protect all marine engines from freeze-up damage during winter storage.; Formulated to be non-toxic and biodegradable; Dyed in bright color to allow for easy blow-through visibility; AntiFreeze Dilution Chart: Undiluted2 Pts Solution / 1 Pt WaterItemCopper BurstPVC BurstFreeze ProtectionCopper BurstPVC BurstFreeze ProtectionWintertech-50F-10F+17Fn/an/an/a-50-50F-10F+12Fn/an/an/a-100-100F-80F-60F-72F-50F-6F-200-200F-150F-100F-120F-90F-80F 1 Pt Solution / 1 Pt Water1 Pt Solution / 2 Pts WaterItemCopper BurstPVC BurstFreeze ProtectionCopper BurstPVC BurstFreeze ProtectionWintertechn/an/an/an/an/an/a-50n/an/an/an/an/an/a-100-54F-20F+9Fn/an/an/a-200-86F-66F-28F-62F-30F+5FFrequently Asked QuestionsWhat is Starbrite Premium -100 Engine and Water System Marine Antifreeze used for?Starbrite Premium -100 Engine and Water System Marine Antifreeze is designed to protect marine engines and drinking water systems from freeze-ups during storage. It can be used in boats, RVs, vacation homes, and pools, with burst protection down to -100F (-73C).What temperature protection does Starbrite Premium -100 Marine Antifreeze provide?When used undiluted, Starbrite Premium -100 Marine Antifreeze provides burst protection to -100F (-73C) and freeze protection within a range of -58F to -63F (-50C to -52C). Freeze point readings on the PG scale will range from -58F to -63F when tested with a refractometer or hydrometer.Can Starbrite Premium -100 Marine Antifreeze be diluted?Yes. Starbrite Premium -100 Marine Antifreeze can be used ready-to-use or diluted. The product description provides dilution protection values for different ratios, including 2 parts solution to 1 part water, 1 part solution to 1 part water, and 1 part solution to 2 parts water. Follow the product label for the proper dilution ratio.Is Starbrite Premium -100 Marine Antifreeze safe for marine engine components?Starbrite Premium -100 Marine Antifreeze contains corrosion inhibitors designed to protect aluminum, copper, brass, solder, and other metal engine components and seals. It is also identified as safe for copper, brass, and all types of plastic, as well as rubber, seals, and hose materials.How does Starbrite Premium -100 Marine Antifreeze help during winterization?The antifreeze protects water systems and engines from freeze-up damage during winter storage. Its alcohol-free, non-toxic formula is designed to reduce evaporation and maintain concentration during storage, while its bright blue-green color provides blow-through visibility during winterization.What should I know about using Starbrite Premium -100 Marine Antifreeze in drinking water systems?The product is designed for drinking water systems as well as marine engines. The description notes that PVC pipes used in most drinking water systems have a burst point of about -10F (-23C), so the antifreeze's stated protection depends on the concentration used. Follow the product label for the appropriate dilution ratio.//