I had the valve cover off of my Sonata to check the valve clearance (it was well within spec, BTW). Here are some pics.
This car has just over 100k miles. I’ve owned this car for 40k miles. I’ve been using either synthetic or conventional for reasonable oil changes. I buy whatever name-brand oil is on sale. I generally go about 5k miles or so on conventional and 7500+ on synthetic. Oil filters have mostly been OE Hyundai filters.
Overall I think it looks pretty good, considering that I don’t know what the first 60k miles of maintenance were like. There is one gunky spot that’s highlighted in red. The way this engine is positioned oil collects in that spot and I don't think it can easily drain away.
This car has just over 100k miles. I’ve owned this car for 40k miles. I’ve been using either synthetic or conventional for reasonable oil changes. I buy whatever name-brand oil is on sale. I generally go about 5k miles or so on conventional and 7500+ on synthetic. Oil filters have mostly been OE Hyundai filters.
Overall I think it looks pretty good, considering that I don’t know what the first 60k miles of maintenance were like. There is one gunky spot that’s highlighted in red. The way this engine is positioned oil collects in that spot and I don't think it can easily drain away.