Engine lifespan

[Knubearit]

I use Top Tier gas only should I go back to 87 with e10 or mid grade 89 with e5 or 91 with 0 ethanol. Dealer recommend 6,000 Km oil change as opposed to 12,000 Km according to the owners manual.

Spoke to my dealership mechanic today. The reason for the severe use maintenance service is due to my use and location's type of weather. They use Castrol Edge full Synthetic oil between every 6,000 to 8,000 Km and at every 32,000Km they do an Upper Cylinder pressure clean with the engine running for an extra $150.00 which takes about 3/4 to 1 hr. I did some research and found this maintenance would keep the engine running at optimal efficiency and longevity. This would take care of the inevitable carbon build up on the intake valves therefore eliminate potential problems or possible engine damage due this carbon buildup . This problem is with ALL Direct Injection engines. So you pay now or pay a lot more later!!!

 

[Mytest4uis]

@Knubearit thanks for the info. Good to know 👍🏾

 

[GNR]

let me put it another way, my Telly 8s my 5th Kia and change oil @ 7500 miles and have 32,000 trouble free miles so far. Had '07 sorento that currently has 345,000 miles and still runs as goot as it did new (gave to my dad) he is still driving it and it has never had any engine issues or been on shop for repairs. Had '14 sorento with 300,000 miles with no engine issues or repairs (traded on Telly) but still ran great. Also have '12 & '13 forte's with over 70,000 on each with to troubles with either. All Kia's changed @ 7500 miles with Mobile 1 full synthetic in '07 and Pennzoil Ultra Platinum full synthetic in others. None have been in the shop for engine repairs

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Sounds like the V6 Kia's are good for a lot of miles (at least the port injection ones).

 

[RebelShadow]

Just an update since my last post. Telly now has 56,000 on it with no issues.

 

[GNR]

I wonder if an Atkinson cycle engine like the Telly's would have less problems with carbon build up?

As I understand it, some unburnt fuel is pushed back past the intake valve before it closes with an A cycle engine. That fuel might help to clean carbon deposits?

 

[Knubearit]

I wonder if an Atkinson cycle engine like the Telly's would have less problems with carbon build up?

As I understand it, some unburnt fuel is pushed back past the intake valve before it closes with an A cycle engine. That fuel might help to clean carbon deposits?

It does help somewhat but not to the extent that some will make you believe. That statement is according to my automotive engineer friend.

 

[GNR]

Good info. Thanks.

 

[Djgberg]

Just an update since my last post. Telly now has 56,000 on it with no issues.

RebelShadow, did you do you first Telly oil change at 7500 miles? And are you using Mobil One?

 

[Rick2456]

Most Gas Direct Injection engine will have a short life expectancy due to Intake valve deposit. My 2020 3.8l Telluride has very heavy carbon deposit at the tail pipe and my gas mileage has dropped at 2,245Km or 1,394miles. I will probably have the valves cleaned every 12,000miles using a DGI spray cleaner. I use Shell mid-grade gas and Castrol Synthetic oil. I think Hyundai and Kia should have both DGI and Port Injection were several manufacturers have started to use in 2019.

My 22 telly hasn't had any issues and I do keep on top of the oil consumption (none) and the tailpipe (clean). But I do change the oil every 5k and use only top tier gas. So far, so good.