Redline Oil RED81423 Break-In Oil Additive w/ Zinc Case/12-16oz

Redline Oil RED81423 Break-In Oil Additive w/ Zinc Case/12-16oz is listed by Motorstate as a Motor Oil Additives for catalog matching by brand, part number, and product name. Use this source-backed listing when comparing Redline Oil components in the Motor Oil Additives category. The manufacturer part reference is 81403, while the Motorstate part number is RED81423. Catalog description context: Motor Oil Additive - Break-In - High Zinc - Synthetic - 16 oz Bottle - Set of 12. No vehicle compatibility is stated here unless it is present in separate fitment data.