whuuup there he is

 

10-30 AMSOIL
/thread.

 

I would run what the manufacturer recommends - 5W30 full synthetic. Doesn't have to be Mobil 1, but does need to meet the GM standards for the car.

 

AMSOIL here. Lets not get mad guys no need in it.

 

Why, Why do common sense motoring people always want to rethink 15 years of intense mental engineering effort? How aboout this, 1. Open the glove box 2. get out the owners manual 3. look up the specs for the motor oil. 4. It's going to inform you that the engine oil can or could be Mobil-1 5W/30, but that whatever or whenever you pick an oil, IT MUST PASS GM4718M specifications. It can be maple syrup, but it needs to have a viscosity of 5W/30 if you live in the continental United States, and it must pass the GM specs GM4718M period.

Years ago, a lot of years ago a bunch of really Intelligent Powertrain & chemical Engineers were paid to come up with the right chemical oiling needs for the LSX engines. They found the it needs to be a synthetic 5W/30 and it must pass their tests GM4718M

In Germany, the Porsche engineers had the same problem, after much debating and chemical analysis they found that Mobil-1 5W/30 was the right motor oil for all of their engines up to 350 HP and for the other more powerful engines up to 550 HP that Mobil-1 0W/40 synthetic oil was just the ticket. Now do any of you think that those **** german engineers would pick a AMERICAN OIL over a European oil like BP's Castrol synthetic oil for their precious engines ? Think about it for a minute, now go get your Corvettes Owners Manual and see if a idea like using an synthetic oil meeting GM4718M specifications doesn't seem , . . Logical. Perhaps ? Bill, why does this myth comes up every month? can it be READING is a lost communications form ?

 

Why would you challenge the engineers who built the car? Listen to them.

 

First of thanks for all the input as we can see alot of people have different recommendations.. my biggest problem is this idiot who is going to try and insult people on the forum.. dude if your sick of newbies then dont come to this post your the idiot that takes his 'PRECIOUS" time and writes out a big post and trys to insult people.... if the whole "read your owners manual" was the way to go for everything why would people lower the car if thats what engineers spent so much time researching its not recommended to do that.. alot of people have been super helpful on this forum its just those idiots who lack self confidence and need to try and put others down but it makes sence why they have a vette cuz they think it will help them but the fact is you still have no friends and it doesnt make you any better.... that being said I am grateful for all of you who have made recommendations and pointed me in the right direction.

 

Uck Ohhhhhhhhh........

 

[QUOTE=Evil-Twin; I have a journel with every thing that I have ever done to my car.. including receipts and correspondance. every sales slip,test result for every drop of oil and filter, light bulb, mod, every maintenance scheduled report.

I feel allot better now knowing Im not the only one who does this. I do it with every car I own.

 

I really hate to say this but what makes the Corvette LS1 engines any better or different than the LS1 in the Firebird or Camaro? It's not! In fact Firebirds and Camaros typically put down more rwhp than Vettes because of the solid axle. But they didn't come with synthetic oil nor does the owners manual of those cars mention the use of it, don't get me wrong I use synthetic in my Formula and my Corvette, 5w30 in the Vette and 10w-30 in the Formula. All I'm saying is its pretty obvious to me that not using synthetic oil meeting GM stsndards is not going to cause engine failure in an LS1 regaurdless of what kind of car it is, yet the Vette is the only one that says its a "requirement".

Just my 2 cents.

 

That is a good point .

 

werd!

 

i've always assumed the Corvette "requires" synthetic because that's what the oil life monitor uses to calculate remaining life. Using regular dino oil could cause problems down the road (literally!) if you follow the olm.

 

The C5 draws air from 6 inches off the ground.."IT's a Bottom Feeder",
In the summer black top surfaces can reach 140F.. with this, there is no heat transfer, and the oil needs to withstand heat shear cause by this situation.. the Corvette requires this spec to cover heat ranges in the + 240/250 F area " It's a Y body"... So for all you logical people, use what ever you want in the C5, just consider it an F body, because that is what it isnt.... F bodies draw air from 18 inches above road surfaces and with this , they get to see more ambient temps, and much easier heat transfer.. Like I said ,and have said for so long.. So many Know it all's, so many uninformed and logical people.. its a good thing to use your head and go toe to toe with guys that developed this car. Because obviously you know better.
With Love
Bill aka ET

 

MONSTER

 

I was using Amsoil but by the time I pay shipping and taxes, I may as well by Mobil 1 locally..... When the local stores have sales going on, it's even cheaper to buy Mobil 1 here.

 

I am the same way as I maintain a log book on each vehicle. It shows everything that has been done to the vehicle, down to each gas fillup. Over the years I've found that it comes in handy when selling the vehicle, particularly when negotiating the sales price with the purchaser.
As for the owner's manual, there IS no excuse, particularly since it is available as a free download on the web. Although I have the paper one that came with the car I also have the e-version saved to my computer desktop. Usually if I think of something that I want to research, it's while I'm already at the computer, so it comes in real handy.

 

Its also a good thing to do for the next owner, or adds value in a trade in... Dealerships kill for a trade in with a journel like this. it makes their sale so much easier, and they can get a premium price for it. Of course you get a premium on your trade in, or private sale too.

 

Thanks for clearing that up. I wondered why the Fbody didn't call for the same spec

 

I have done this on all of the cars and Corvettes I've owned. I can go backwards and tell when all of the oil changes and mileage, Parts and modifications, replaced parts and most of all, Just how much the car has cost since new. If I ever go to sell the car I can book and verse on anything the perspective buyer might want to know. Repair, recalls Mods, . . . But I suffer from OCD as it is.