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mary_vogel6

RC Hybrid Oil Contamination

I'm facing a concerning issue with my 2018 Lexus RC hybrid, which has 123991 km. A warning light appeared, and the oil pressure warning lamp is consistently on. The oil seems overly contaminated, with a dark, sludgy color. I suspect it's from exceeding the maintenance interval. Has anyone experienced similar oil contamination or oil pressure problems with their RC?

Summary of the thread

A 2018 Lexus RC hybrid experienced oil contamination and a persistent oil pressure warning light, likely due to exceeding the maintenance interval by 5000 km. The oil appeared dark and sludgy, with a burnt smell, indicating possible sludge buildup. The issue was confirmed to be related to the overdue oil change, and a workshop performed an oil change and engine flush to resolve it. The situation highlights the importance of adhering to regular maintenance schedules to prevent such problems.

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4 comment(s)

robin_silver48

Whoa, that sounds familiar! I had a similar scare with my RC (petrol engine); seeing those warning lights pop up is never fun. Was the oil particularly dark or sludgy? What did it smell like? How long has it been since your last oil change?

mary_vogel6 (community.author)

Thanks for the quick response! The oil was indeed very dark, almost black, and had a slightly burnt smell. I exceeded the maintenance interval by about 5000 km, which I know is not ideal. Could the oil sludge and contamination be directly related to that?

robin_silver48

Yep, sounds like you’re on the right track. Going over the maintenance interval can definitely cause oil sludge and pressure issues. Given the symptoms and the overdue change, it's highly probable. I ended up needing a thorough engine flush. Get it checked ASAP; the eventual repair cost could rise quickly.

mary_vogel6 (community.author)

Appreciate the confirmation and advice! I took it to a workshop, and they confirmed it was due to the extended oil change interval, resulting in oil contamination. They performed an oil change and engine flush for 165€. Lesson learned – sticking to the maintenance schedule is crucial!

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LEXUS

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RC