Switch to synthetic??

[Forte]

Wow good to know! I love when mechanics lie.

[jshaf]

way too many advantages to runing Moble 1 full synthetic, put it in mine at about 6KBought it with 4K) have 11.5K now

[ChadG]

Originally Posted by Forte

If you don't use the GM/AC Delco 5w30 DEXOS synthetic blend (for v6, full synth for v8) it will most likely void your powertrain warranty. Just a heads up.

You must be taking it to Courtesy Chevrolet in San Jose . . . I had them tell me that using anything other than an AC Delco oil filter would void my warranty. Needless to say I'm going to be going to Fremont Chevrolet from now on.

[nyrfan]

Originally Posted by Forte

Wow good to know! I love when mechanics lie.

[blackTT600]

I cant believe this is a thread. there is NO WAY I would put any thing but FULL SYN in my LLT. Factory puts mobile 1 in, so she has never NEVER seen anything else!!!

[nyrfan]

Originally Posted by blackTT600

I cant believe this is a thread. there is NO WAY I would put any thing but FULL SYN in my LLT. Factory puts mobile 1 in, so she has never NEVER seen anything else!!!

Again 100% INCORRECT. The LLT comes with synthetic blend from the factory.

So your car "has" seen something else.


Sent from my 2LT/RS using Tapatalk

[blackTT600]

NOOOOOOOOOOOOOOOOOO!!!!

Ok ok well never again!
Are you sure about that?

[nyrfan]

Originally Posted by blackTT600

NOOOOOOOOOOOOOOOOOO!!!!

Ok ok well never again!
Are you sure about that?

110% sure. Only the SS comes from the factory with full synthetic.

And unless you specifically ask for full synthetic at your oil change (assuming you go to the dealer) you've been getting synthetic blend.


Sent from my 2LT/RS using Tapatalk

[blackTT600]

only did first two at dealer, and i did make sure it was full syn.

[BiG_TiMe]

YOU'RE NOT USING SYNTHETIC??
I've never ran anything less that synthetic

[Nvincent4708]

definitely make the switch

whether to mobil1, royal purple, amsoil is upto you.

[jkemp16]

Well technically the 2010 v6 asks for a GM 6094 specification which includes conventional oil. Dexos is 2011-up...but anyway I just did an oil change with Mobil 1.

[Ozzie RS]

You can not go wrong with a full synthetic Mobile One or the equivalent.

[RickRay]

Originally Posted by blackTT600

I cant believe this is a thread. there is NO WAY I would put any thing but FULL SYN in my LLT. Factory puts mobile 1 in, so she has never NEVER seen anything else!!!

Originally Posted by nyrfan

Again 100% INCORRECT. The LLT comes with synthetic blend from the factory.

So your car "has" seen something else.


Sent from my 2LT/RS using Tapatalk

2010 ONLY
INCORRECT....V6 comes with Factory Conventional Oil...Not synthetic!!!

What Kind of Engine Oil to Use

(V6 Engine) 2010
Look for three things:

.GM6094M
Use only an oil that meets GM
Standard GM6094M.
. SAE 5W-30
SAE 5W-30 is best for the
vehicle. These numbers on

an oil container show its

viscosity, or thickness. Do not
use other viscosity oils such

as SAE 20W-50.

What Kind of Engine Oil to Use

(V8 Engines) 2010

Look for three things:

. GM4718M

This vehicle's engine requires a

special oil meeting GM Standard

GM4718M. Oils meeting this

standard may be identified as
synthetic. However, not all
synthetic oils will meet this GM
standard. Use only an oil that
meets GM Standard GM4718M.

. SAE 5W-30

SAE 5W-30 is best for the

vehicle. These numbers on

an oil container show its

viscosity, or thickness. Do not
use other viscosity oils such

as SAE 20W-50

This vehicle's engine was filled at

the factory with a Mobil 1 ® synthetic

oil meeting all requirements for this vehicle.

Oil Flushes

Do not add anything to the oil.

The recommended oils with the

starburst symbol that meet GM
standards are all that is needed
for good performance and engine
protection.
Engine oil system flushes are not
recommended and could cause
engine damage not covered by the

vehicle warranty.

2011--2012

I checked the OWNERS MANUAL for both years and all it said was:

V6 - V8

ACDelco dexos1 Synthetic Blend is recommended
This vehicle was filled at the factory with dexos

‐approved engine oil.

Also for Oil Changes

Dexos and GF-5 oils allow drivers to drive more miles between oil changes without needing to worry about a loss of lubrication qualities, the buildup of sludge, or damage to sensitive emission control devices. Depending on driving habits, oil changes could extend beyond 10,000 miles.

While that may be heresy compared to the 3,000-mile oil change interval your local shop recommends, it’s the new reality of oil change intervals. Thanks to the use of in-vehicle oil life monitoring and these new oil formulations, there’s no longer one specific mileage interval to adhere to. In other words, changing your oil every 3,000 miles will likely lead to wasting oil by replacing it before it is actually necessary.
Further, GM says that if a customer has an engine failure that is traced to oil or lubrication issues, and if the customer does not use dexos 1 oil in their gasoline-powered GM vehicle, that act alone could void the warranty. The same goes for GM vehicles with diesel engines, which use a diesel-specific “dexos 2” oil blend