PennGrade 1 Partial Synthetic SAE 10W-40 High Performance Oil - Case of 12 - 1 Quart Bottles Battery Terminal Boot 10SI and 12SI alternators on

10SI and 12SI alternators on most 1963 through 1985 GM vehicles

Shoulders are 2" width to accommodate a HANS or other Head & Neck Restraint Device and adjust from 26" to 62" in length

Nominal Length

The super tall crab cap is taller to fit special racing blocks such as the Allen Root or Rocket blocks

PennGrade 1 Partial Synthetic SAE 10W-40 High Performance Oil - Case of 12 - 1 Quart Bottles Battery Terminal Boot 10SI and 12SI alternators onDesigned to meet the lubrication demands of traditional classic and muscle car engines as well as high performance competition engines, Brad Penn(R) Penn Grade 1(R) Partial Synthetic SAE 10W 40 High Performance Oil offers the multi viscosity advantages of faster oil flow and engine warm up as well as excellent film strength and engine component anti wear protection. PENN GRADE 1(R) High Performance Oils are specially formulated using high quality PENN