10W30 vs 10W40: Viscosity, Performance & Ideal Applications
So, you’re cruising down the oil aisle, and suddenly you’re faced with the age-old dilemma: 10w30 or 10w40? As a car enthusiast, I’ve been there, pondering the viscosity conundrum like a philosopher contemplating the meaning of life. Should you go for the 10w30, the Jack of all trades, or the 10w40, the reliable workhorse of […]