Castrol Oil

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Jun 17, 2007 | 06:40 PM

RogerArrambide

Thread Starter

Racer

Joined: May 2007

Posts: 281

Likes: 0

From: Monterrey, Mexico Nuevo Leon

Castrol Oil

I always use the Castrol 10W-30 or 10W40 on summer on my Ls1 Camaros SS..

I need to change oil for my Vette with uo to 55K miles and bought the Castrol Non Syntetic 10W40....

Im reading that almost everyboy uses Mobil 1, but I want to change oil now.... is any problem?, may I change it and in 3-4K miles change for Syntetic??

Jun 17, 2007 | 06:46 PM

rws.1

Race Director

Joined: Jul 2004

Posts: 16,795

Likes: 62

From: Lake Havasu City, AZ

The Vette engine calls for engine oils meeting GM4718M
If you are going to only run it for 3-4 K miles you will be OK with a Castrol regular oil.

Personally I drive over to Walmart and buy a GM4718M oil..... in 5W30
Mobil 1
Pennzoil Platinum
Castrol Syntec.

Jun 17, 2007 | 06:49 PM

BrianG01

Racer

Joined: Feb 2006

Posts: 273

Likes: 1

From: Columbia Maryland

are you saying you got 10w40 for the vette? Id stick to a syntehtic 5w30 from ANY brand before running a 10w40

Jun 17, 2007 | 07:03 PM

timemender

Burning Brakes

Joined: Aug 2006

Posts: 1,217

Likes: 5

From: Stark County Ohio

I recently noticed that Castrol Syntec 5W-50 meets GM4718M. (It never did before) I use it in my full-size Chevy truck and my 1974 Corvette. I have 250,000 miles on the 1974 Corvette using Syntec 5W-50. Blew three race prepped turbo400 transmissions in it but I am still running the same 350 cu-in engine without a rebuild.

(I use Mobil-1 5W-30 in the 2000 & 2003 Vettes)

Jun 17, 2007 | 08:02 PM

Dave68

Race Director

Joined: Dec 2000

Posts: 19,304

Likes: 85

From: San Diego CA

First off, I would never use a non-synthetic oil in a C5. Secondly, there is really no reason to use a 10W oil during Summer months unless you are going to do some extensive track racing. 10W-30 is essentially, obsolete in this day and age. A synthetic 10W-30 doesn't pump up as quickly as a 5W-30 or 0W-30 oil during startup, but will certainly not wear out your engine significantly faster.

Jun 17, 2007 | 08:50 PM

RogerArrambide

Thread Starter

Racer

Joined: May 2007

Posts: 281

Likes: 0

From: Monterrey, Mexico Nuevo Leon

I dont understand why, some of people still think that 10W would never work and 5W is the hole world difference!!

Fisrt of all, in the city I live, the lowest temp is about 25Celsius, like 80°F, so 0 or 5W will never really be neded is my tought.

On the other side, the 40 are better than the 30 beacause my Vette still dont tune for early turn on fans y dont have 160° thermostat and always works between 200 and 250° so, I think woild be better 50m but I think 40 is good.

Jun 17, 2007 | 11:50 PM

Sawbladz

Racer

Joined: Apr 2006

Posts: 266

Likes: 2

From: Alliston Ontario

Run German Castrol Syntec 0W-30.

The first number is the oils ability to flow at 40* C. Why not have the best flow possible? The higher the first number...the longer your motor is starved of oil each time it is started when cold.

This site will keep you busy for a LONG time. lol
http://www.bobistheoilguy.com/

Last edited by Sawbladz; Jun 18, 2007 at 12:04 AM.