12-24-2025, 12:04 PM
I recently purchased a used pickup truck for hauling materials for my small landscaping business, and the owner's manual recommends a conventional oil change interval of every 5,000 miles, but I've been told by several mechanics that with modern synthetic oils and the heavy stop-and-go driving I do, I could safely extend that to 7,500 or even 10,000 miles. I'm trying to balance cost-saving with protecting my engine, which is critical for my livelihood, but I'm confused by the conflicting advice and unsure if I should rely on the vehicle's oil life monitor or stick to a strict mileage schedule. For others who use their vehicles for similar light commercial work, what oil change interval have you found to be reliable based on used oil analysis or long-term engine health, and does using a full synthetic truly allow for such a significant extension without risking premature wear?