Curious what the increased rate of wear or failure was when you tested the car for light duty use using a quality conventional oil?

 

Why would GM have a separate DOE to test a car designed for road racing, with world class performance, to see how it compares with grandma's "only driven to church on Sunday" Grand Am....?

 

I suspect they didn't. But thats how a good portion of these cars are actually driven. The Mobile 1 recommended is a superior oil, as it solves a lot of problems in a performance car. High heat, oil shear, longevity, service intervals, no oil cooler, simplifies oil life monitor etc. But most of these issues do not need to be addressed by a synthetic for grocery getter, Sunday driver duty as long as regular service intervals are observed. I believe Evil-Twin exaggerated his point for light duty use, and overreacted as he is, self proclaimed, crotchety and old. I still stand by my opinion that no harm or unnecessary wear will befall ones C5 if they put in a quality conventional oil for a service interval, and didn't do any hard driving, as the OP did. Would I do it in my car? Hell no, I flog it.

 

Miles or frequency of use is not the issue (with oil). HEAT is an enemy and can be produced by Hard track use OR bumper to bumper all it's low mile life. What the HeII is 2 bucks more a quart going to cost you anyway in an annual oil change as you use your car?

 

First of all your opinion of me exaggerating anything about this car that I invested 5 years of my 45 year automotive career is insulting.. you do cement work!!!! You remind me of that on board computer HAL in the Movie 2001 a space odyssey . As the ship was being destroyed, the computer HAL would keep saying every thing is A OK. I wasn't going to post in the thread again but your insult to my credibility caused me to address your post again.. I suggest you do whatever you want but your opinion means nothing.. at least not about automotive technology... When you are mixing your cement, I don't tell you to use the cheapest cement because the cement is only being used for a sidewalk, but then what about that trash truck that could back up on the sidewalk at the driveway to turn around.. OK this is getting silly... The C5 can operate in a 120F ambient environment, just sitting at a stop light in Arizona where black top temps can reach 160F... the C5 is a bottom feeder and when sucking 160F temps off that blacktop there is little heat exchange.. coolant can easily reach 240/260F and oil can easily see 300F.. and this is just going to the grocery store.... I don't know why I am trying to save you and your C5,, after all in your mind conventional oil is A OK. Let me get this straight, you said you beat your car so you use synthetic, but you are telling others that they can use conventional..you have no basis in fact , you have no automotive education yet you are offering advice as if it was gospel, to people based on your opinion. An opinion with no education.
The End
and with love
Bill aka ET

 

ET where did you get the molecule to manipulate, just because you talk alot doesn't make you right. I keep it simple trying to help a reular guy. Try reading and thinking before responding I didn't say it's all the same I said the base stock quality is what will make the difference. Since you know everything maybe you should make "oil"

 

Ut oh...........

 

Has anyone noticed how over the past few years the Zinc and Phosphorus (ZDDP) in oil has been slowly reduced? And last June it was lowered even more. The new API spec SN is the worst. This includes Mobile 1. So now I add it myself. Found a good price on ZDDP MAXX. Oil should have at least 1400 ppm to protect metal to metal contact. Mobile 1 is now 900 ppm. Motor will not last 200k miles with it. So when I add a 2 oz bottle of ZDDP it raises it to 1900. Do your own research on it. Go to Mobile 1 web site and they will say the same thing. For Vette you should at least use the 10W 40 or the 0W 40. The mobile 1 5W 30 and 10W 30 are just not good enough anymore.

 

Hmmm......I don't believe this subject has ever been discussed before......

 

Lets see, you have been here 2 months and have 17 post under your belt. I have over 12,000 open forum help post and 15,000 private message help post in the ten Plus years Ive been here. Talk alot?? the 15,000 private message posts are from members seeking my help in private. Half of the open forum post I place are to people just like you,, you know the back peddlers. Most of my post are from my personal involvement with the C5 project over 5 years of development and my 45 years of automotive engineering. You keep it simple???... That the same thing I do because everyone here doesn't have an automotive background.. that's why they ask questions.. and most seek out people on this forum that they can trust and who have established credibility. You said try to read and think before responding????? I think that's some good advice.. try taking it... with 2 months under your belt and 17 post, you should be doing alot more reading a lot more thinking and very little responding. Stick around you may learn a few things here.

Bill aka ET

 

Mike, you make me laugh.... you know I'm a spineless jellyfish.

 

 

I noticed that too. To me its a very important and interesting subject. And if you take your new GM car to the dealer for an oil change guess what they add to the oil? GM calls it EOS, Engine oil Supplement. And guess what it is - ZDDP. They don't want the motor to wear out while its still under warranty. And yet no one talks about it.

 

I was being facetious........

 

Oil is not a molecule. It is thousands of molecules. With synthetics, manufacturers have more control over which molecules are in the products. Different molecules are more stable than others.

 

Walmart sells mobile for 25.00 for the 5 qt jug. Just need single qt to tope er off

 

........and you would end up 1/2 quart low.......

 

zddp has been reduced because it clogs up the cats. beaten all to hell in he C3 forum. In a hydraulic roller cam, not as necessary to have that much. The biggest need for it is an a flat tappet cam where it is a flat metal lifter pressed onto a lifter lobe. since the C5 has roller lifters that chemical barrier between the lobe and lifter isnt as necessary. I would think that if GM wanted a lot of ZDDP in their oil they would have specd an oil that had a large amount in it.

 

That always gets mine full..hmm.mabye im blind. But it looks good
. Anywho its still pretty cheap there.cheaper than auto zone

 

Ok. The total capacity of the system is 6.5 quarts. I'm not sure what you are judging as full, but if you only filling with 6 quarts, your always a 1/2 quart low. Lot's of good info in the owners manual....