Always start in the center and move outward in a circular pattern.
Recommendations for viscosity (usually 15W-40) based on your operating climate. Why You Need the Factory Manual Hino F21c Engine Manual
Based on user experiences and expert analysis, the F21C is generally viewed as a heavy-duty engine. F21C Workshop Manual S5-YF21E01A | PDF - Scribd Always start in the center and move outward