× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: Synthetic Motor Oil: Extended Drain Interval - or Not?
Posted to Castrol Forum on 1/26/2017 6 Replies

[...trimmed text...]

We need to define at what point a drain interval qualifies as an "Extended Drain Interval". IMO We should NOT consider anything under 8,000 miles to be an extended drain interval.

7,500 miles is the... Login to read more.

6 Replies Received (View Replies)