Blowing Smoke

[Suze]

The oil was consistently changed at each maintenance per recommendation of Hyunda, and only by Hyundai approved maintenance services. The cap on the oil tank states 5W-20, the maintenance book states 5w-20, 30 or 10w-30 if temps are higher. The book recommends every 7500 miles, but usually my service light would remind me sooner, and I would do it around the 6000K mark.

 

[REMIX]

I've had five Hyundai/Genesis cars over the last 12 years and never added oil between changes at 5000 to 7500 miles.

Is that how long you're going? My maintenance minder says it needs changing, I've put less than 4,000 miles on it. I drive pretty conservatively. Had a Prius that used to go 10,000 between changes.

I really miss having a garage, I'd change the oil myself whenever I felt like it. $30 and done, and that was for synthetic. When I had to start relying on someone else, that price doubled.

 

[EdP]

Is that how long you're going? My maintenance minder says it needs changing, I've put less than 4,000 miles on it. I drive pretty conservatively. Had a Prius that used to go 10,000 between changes.

I really miss having a garage, I'd change the oil myself whenever I felt like it. $30 and done, and that was for synthetic. When I had to start relying on someone else, that price doubled.

The maintenance minder is probably set by the dealer. There are still places that sell you a change every 3000 miles.

I go by the manual. When I was working, 7500 miles was OK year round. Now that I drive less, in winter I change sooner. I'm also solving that by moving to a warmer climate.
Seems like the people that profit from oil changes are sticking with recommendations from the 1950s. Back then it was common to do rings and bearings at 50,000 miles too.

 

[glennk]

The maintenance minder is probably set by the dealer. There are still places that sell you a change every 3000 miles.

I go by the manual. When I was working, 7500 miles was OK year round. Now that I drive less, in winter I change sooner. I'm also solving that by moving to a warmer climate.
Seems like the people that profit from oil changes are sticking with recommendations from the 1950s. Back then it was common to do rings and bearings at 50,000 miles too.

Should be 3,750 for severe conditions.

 

[Hueydriver]

Should be 3,750 for severe conditions.

That’s what I am going by!

 

[carguy75]

The oil was consistently changed at each maintenance per recommendation of Hyunda, and only by Hyundai approved maintenance services. The cap on the oil tank states 5W-20, the maintenance book states 5w-20, 30 or 10w-30 if temps are higher. The book recommends every 7500 miles, but usually my service light would remind me sooner, and I would do it around the 6000K mark.

Thank you for the reply. I ask about the oil change interval and oil weight used to get an understanding of what the issue can be. I personally use fully synthetic 5w-30 oil in my 5.0 and change the oil between 3k-4k miles. I do not like to run my oil at the limits of what a manufacturer states for normal operation. In general my belief is that shorter oil changes reduces timing chain/guide wear and keep the pistons/oil seals cleaner overall in the long run.
Many manufacturer service recommendations do not favor a long running engine pass 100k miles in my opinion. Furthermore, many automakers that recommend 7k-10k oil changes has engines that need internal repair before 150k miles or soon after. Look up BMW V8 engine timing chain guide failures for an example.

Long oil changes sound good on paper, but they rarely leads to an engine that can go 200k miles before being repaired.

Back to your engine, it sound like your piston rings is stuck due to sludge /carbon buildup hence the oil burning and smoke. 5w-20 is very thin oil to used in a 420HP V8 which could break-down to sludge well before the 7K mile oil change due to fuel dilution from direct injection, especially if you use 87 octane which leave a lot of carbon on the pistons. Bad combination.

 

[Suze]

Thank you for your feedback. I use 91 octane here in California

 

[g_512994]

It is still in the shop!