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10W30 in a 2011? Seriously?

AlaskanSilverado07

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Morgan1986 Senior Enthusiast

Morgan1986

Posted
Posted

I use full synthetic to . Wall mart offers some great deals on oil sometimes .

 

 

Gotta love Wally world. But my buddy works at a Canadian tire oil change spot and he always fill with full syn... I pay for the cheapest stuff... Always works out to be cheaper and I don't have to lift a finger!

 

I dont trust other people changing my oil . Like in canadian tire and wallmart they dont get paid enough to do a good job and might not tighten up something right .
CapitalTruck Senior Enthusiast

CapitalTruck

Posted
Posted

I use full synthetic to . Wall mart offers some great deals on oil sometimes .

 

 

Gotta love Wally world. But my buddy works at a Canadian tire oil change spot and he always fill with full syn... I pay for the cheapest stuff... Always works out to be cheaper and I don't have to lift a finger!

 

I dont trust other people changing my oil . Like in canadian tire and wallmart they dont get paid enough to do a good job and might not tighten up something right .

 

 

You can't beat the 5 qt jug of Mobil 1 at Wal-Mart for price. Also, I would encourage everyone to actually research the oil life system that GM has come up with. If you're changing the oil before that light comes on you're really doing it too much. The OLM tracks engine temperature/rpms/miles. It by no means looks only at miles/kms. I've had it come on at 5xxx, and as far out as 8xxx when driving nothing but highway across U.S.

latreille89 Enthusiast

latreille89

Posted
Posted

I know the oil life indicator does more than chek how many miles, but I still am a believer in changing your oil at regular intervals and keeping it clean. Fresh and clean oil will always be better than trusting a computer to tell me how good my oil is. I don't think te truck had a lab under the hood to test my oil every 1000km.

jdelrizzle Enthusiast

jdelrizzle

Posted
Posted

I know the oil life indicator does more than chek how many miles, but I still am a believer in changing your oil at regular intervals and keeping it clean. Fresh and clean oil will always be better than trusting a computer to tell me how good my oil is. I don't think te truck had a lab under the hood to test my oil every 1000km.

 

 

+1

Wolfmanjohn Enthusiast

Wolfmanjohn

Posted
Posted
I don't think the truck had a lab under the hood to test my oil every 1000km.

 

 

I'm sure there was quite a bit of oil sampling going on during the developmental stages of the system to determine the proper algorithms for change interval. That said, I still go for a fixed interval of 5k or one year; that one year usually rolls around first, so time is my main parameter.

dlstewart01 Senior Enthusiast

dlstewart01

Posted
Posted

The OLM does NOT just monitor engine revolutions. Each specific engine has a stored maximum "bank" of set engine duty cycles (revolutions) between OCIs, reset by the user at time of service. Each time the PCM fires, it subtracts the number of revolutions from the bank. When the bank = 0, the "Change Engine Oil" or oil light illuminates. Outside air temp, coolant temp, cold soak time, throttle load, vehicle speed, etc. are all accounted for in an effort to predict oil temperature, which in turn assess an exponential penalty factor. If the oil temp is above or below the standard algorithm allowance, the amount of degradation increases and is subtracted from the bank value at a higher rate. Hence, if you drive short trips in cold temps, the OLM ticks away faster. If you track your Vette with high rpm/loads, the OLM ticks away faster. If you tow, well you get the idea...

 

The ONLY thing the OLM cannot account for is a mechanical engine fault. If you have a leaky air filter or a coolant leak, the OLM will never know or change it's signaled OCI. This is where and oil condition monitor would be superior. GM chose this route for simplicity/cost. They are willing to stake a 5yr/100K powertrain warranty on it, so it can't be too terrible.

 

IMHO, the intervals are a bit on the high side, usually signaling for a change right at the time the oil is spent. I prefer a buffer of 10-20%, but have no qualms about going to 0%. I have yet to see a bad UOA by following the OLM

BlackZ71Silverado Senior Enthusiast

BlackZ71Silverado

Posted
Posted

On my change oil thing I have to reset it every time ? So I dont believe it is that advance .

 

 

EXACTLY!...........If it really operated the way people say it does, there would be no need to reset it, it would know the oil is clean, new and not broken down, it would reset itself like the fuel gauge miles to empty does.

 

Change your oil as often as you like, it's your truck, take care of it.

txab Senior Enthusiast

txab

Posted
Posted

On my change oil thing I have to reset it every time ? So I dont believe it is that advance .

 

 

EXACTLY!...........If it really operated the way people say it does, there would be no need to reset it, it would know the oil is clean, new and not broken down, it would reset itself like the fuel gauge miles to empty does.

 

Change your oil as often as you like, it's your truck, take care of it.

 

 

Apparently you don't understand how it works. Nowhere does it state the OLM samples oil. When you reset the OLM, it's the equivalent of the fuel gauge sensing a fueling event has occurred. So you would have a system that self detects when the oil has been drained and replaced? It's far much simpler to reset it yourself.

 

The OLM does not sample or test your oil at all. Period!

 

Have a UOA performed sometime and see what a reasonable OCI is. 5k-6k is well within reason for today's vehicles and modern oils, whether dino or synthetic

 

Your last sentence is the best thing you've said in that post. Change as often as you like.

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