Here is a concise summary of the transcript:
**Title:** Investigating Oil Change Intervals
**Summary:**
* Marketplace (a CBC program) investigates the frequency of oil changes recommended by car dealerships vs. owner's manuals.
* Most owner's manuals suggest oil changes at 12 months or 16,000 km, while many dealerships recommend more frequent changes (e.g., every 6 months or 5,000 km).
* Experts, including a licensed mechanic and a former dealership service advisor, reveal that:
+ Dealerships may push more frequent oil changes to increase sales and find additional issues to fix.
+ Following the owner's manual's schedule is usually sufficient and can help reduce waste and save money.
* An oil analysis test on a 2013 Jeep Wrangler, which had gone 8 months and 1,000 km since its last oil change, showed the oil was still good and could last another 3,000-4,000 km.
**Key Takeaway:** Always consult your owner's manual for the recommended oil change interval, as more frequent changes may be unnecessary and driven by dealership sales tactics.
Here are the key facts extracted from the text, numbered and in short sentences, without opinions:
**Vehicle Maintenance**
1. Many car owners change their oil every six months or 8,000 kilometers.
2. Some owner's manuals recommend oil changes every year or after a certain number of kilometers (e.g., 12 months or 16,000 km).
**Dealership Recommendations**
3. Three out of five dealerships visited did not mention following the oil change monitoring system.
4. Dealerships tested:
* Honda: recommended following the owner's manual.
* Acura: similar advice to Honda.
* Fiat, Dodge, and Ford: initially recommended more frequent oil changes than the owner's manual.
**Expert Insights**
5. Mark Wynnton, licensed mechanic, states that the owner's manual overrides dealership advice.
6. Modern cars often have oil change monitoring systems that alert drivers when a change is needed.
**Scientific Testing**
7. Fluid Life in Brantford, Ontario, analyzed oil samples from a 2013 Jeep Wrangler.
8. The test results showed the oil was still in good condition after 8 months and 1,000 km.
9. The oil was estimated to be good for another 3,000-4,000 km.
**Industry Practice**
10. Former service advisor Lucas Leung suggests dealerships may recommend more frequent oil changes to upsell other services.
11. Dealerships' responses to the investigation:
* Dodge and Fiat: stand by their service advisors' advice.
* Jeep: no additional comment.
* Ford: confirmed drivers should consult their owner's manual for oil change intervals.
**Statistics**
12. Approximately 50 million cars are in Canada, each taking 4-5 liters of oil per change, contributing to hazardous waste and potential financial waste.