• Sign Up! To view all forums and unlock additional cool features

    Welcome to the #1 KIA Stinger Forum and KIA Stinger community dedicated to KIA Stinger owners and enthusiasts. Register for an account, it's free and it's easy, so don't hesitate to join the KIA Stinger Forum today!


Mobil 1 Full Synthetic How Long Between Oil Changes?

Messages
47
Reactions
1
State
NC
Country
United States
#1
Just had a the dealer put in Mobil 1 Full Synthetic at 3,300 miles. I have read where people recommend 10,000 to 15,000 miles between oil changes when using a full synthetic motor oil. Anyone let it go up beyond 10,000 miles?
 
Messages
449
Reactions
78
State
MO
Country
United States
What I Drive
'05 Pontiac GTO
#2
I would honor the 6,000 mile factory interval for two reasons.

First, that's what they say you need to do to maintain your warranty.

Second, the recommended oil is for a GF-4 or better. GF-4 and GF-5 oils (Mobil 1 is GF-5) are full synthetics. Forget the extended oil change claims by oil companies because they aren't including turbocharged engines in that extended claim. Turbos are red-hot at the turbo shaft and only full synthetic oils can withstand that much direct heat and not congeal on the turbo shaft and bearing which is the main cause of turbo failure. The turbos are included in your 10 year / 100,000 power train warranty so I'd respect the 6,000 mile factory mandate.

I plan on keeping my GT2 for a long time, so I'm shooting for 4,000 mile intervals which I rarely make, so going over a bit won't be a big deal.
 
Messages
71
Reactions
43
State
Non-US
Country
Canada
#3
I plan on following the schedule, but replacing just the oil half way through.

I bought a vacuum fluid extractor so I can just suck the oil out via the dipstick tube.
 

robz32

2000 Posts Achieved
Staff Member
Messages
2,045
Reactions
665
City
Houston
State
TX
Country
United States
What I Drive
Stinger GT2
#4
Messages
71
Reactions
43
State
Non-US
Country
Canada
#5
Just as an aside for those who are not aware, an ACEA A3/B4 oil is substantially better at resisting shear in the punishing world of turbo bearing lubrication than an A5/B5 and is considered 'better'. Larger number is not an upgrade in that case. A5/B5 oils are thin and shear easily by design for fuel efficiency. I would always put an A3/B4 oil in turbo cars if possible. It's required virtually all German cars.

The only mobile 1 oil that meets that spec is the 0w40. Castrol has several (0w30, 0w40, and 5w40) and Shell/Pennzoil/QuakerState have a couple but they tend to be in 1 ltre bottles only and expensive.

Castrol 0w40 and 5w40 meet and exceed all of the specs for the 3.3T and the 0w40 Belgian/German stuff in particular is one of the best oils money can buy.

Just a suggestion.

It's what I'm running in mine and will be providing the dealer with on scheduled services. I'll be doing used oil analysis on samples throughout the life of the car.
 
Last edited:
OP
K
Messages
47
Reactions
1
State
NC
Country
United States
Thread Starter #6
Thanks for the responses. I plan on following the schedule too but how would Kia know that you are following the schedule? Technically one could always go to lube center and Kia wouldn't have a record of it.
 
Messages
449
Reactions
78
State
MO
Country
United States
What I Drive
'05 Pontiac GTO
#7
That question comes up from time to time. I would guess that under normal circumstances, they would never check. But especially with a turbocharged engine, if warrant required a tear-down and they found turbo shaft bearings gummed up or caked with broken-down oil residue, they "could" request proof of oil changes before taking responsibility for the repair. They would also probably require a record of the type of oil used, and if someone did not follow the GF-4 or GF-5 guidelines and used a cheap non-synthetic oil they could refuse warranty repairs. I think you'll notice that your dealer (and most oil-change shops) will specify the oil used for the change.

In my ten years as a service manager, I never asked anyone for proof of service. But then we seldom if ever had an engine failure of any kind during warranty -- in fact I can't recall a single one.
 


Top