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scott's turf
06-13-2006, 08:48 AM
Hi guys,

I bought a 2002 W3500 (cab over style) with a 5.7L (350) engine and it is due for an oil change again. I had done one last fall but can't remember the number of quarts or the type of oil chevy recomends. Any help would be great.

-Scott

Brendan Smith
06-13-2006, 12:42 PM
what does the owner's manual suggest?
not being a smarta$$, just wondering

carcrz
06-13-2006, 01:04 PM
5 quarts. Weight depends on weather conditions. I think they recommend 5w30, but I've always ran 10w30 in mine. I've had 3 different trucks w/ the 350's in them. Now I've gone diesel :weightlifter: .

FearThisDeere
06-13-2006, 03:41 PM
Is there really a big differnce between 10w30 and 5w30? I run 10w30 in my 305 and the manual suggests 5w30.

carcrz
06-13-2006, 10:27 PM
I really can't remember. I think it was something like the 10W30 was thicker so it sticks better during hot weather protecting it better. Not positive on that though.

Audrey
06-14-2006, 12:25 AM
Yep, 5 quarts. 9/16 box end for the plug.

5 Weight oil is thinner than 10 Weight. It will help you in cold starts and/or cold weather by flowing more freely to where it is needed. The thinner oil also helps manufacturers meet the demands of minimum mileage set upon them by the government. Less friction/resistance = more HP and efficiency.

Also, as the clearances of newer engines get tighter, thinner oil is needed to reach all areas effectively. In hot weather, you may get away with 10W oil. However, in colder climates or wintertime, it will eventually cause unwanted effects due to slight starvation as a result of thicker viscosity.

Heck, we used to run 10-40 all the time in the 70's and 80's. Two quarts or so of 20W-50 can help with a slight bearing knock..
In a 90's 5.7 with some miles on it, I'll run 10-30 in the summer, 5-30 in the winter.
I have a 2004 Ford 4.6 liter. It takes 5W-20. Might as well pi$$ in it, it's so thin. But that's what the specs call for...

A

scott's turf
06-14-2006, 07:28 AM
Thanks everyone. If I had an owner's manual I wouldn't be asking the question...grrrrrrrrrrrr. I'll be changing the oil this weekend. Funny how that big engine only needs 5 quarts when everything else seems to take at least 6, even my wife's volvo.

Audrey
06-14-2006, 05:17 PM
Thanks everyone. If I had an owner's manual I wouldn't be asking the question...grrrrrrrrrrrr. I'll be changing the oil this weekend. Funny how that big engine only needs 5 quarts when everything else seems to take at least 6, even my wife's volvo.


It is funny. The Ford I mentioned takes 6 quarts also. IIRC, I did a VW Passat a few times a couple of years back and that took 6.

Can you go online to a more type-specific forum and find your exact info? By that I mean a truck only site. Is it possible to reorder a manual from factory? Maybe a local car/truck show which has vendors?

Carlisle is near here, and several times per year thay have large car shows that draw nationaly. Vendors from everywhere too. Anything like that near you where you could pick up a manual?

A

J&R Landscaping
06-17-2006, 07:58 PM
I run Shell ROTELA T 15W40 with a bottle of lucas oil stabilizer in it throughout the year. I've talked to my mechanic and he has nothing bad to say about it!

If its going to be working a lot, the extra protection won't hurt!!

lawncuttinfoo
06-28-2006, 09:50 AM
my chevy 1500 says 5W30 on the oil cap. I put 10W30 in it last time and my engine has been running hot since. I don't know it it is the cause or not.

scott's turf
06-28-2006, 11:04 AM
my chevy 1500 says 5W30 on the oil cap. I put 10W30 in it last time and my engine has been running hot since. I don't know it it is the cause or not.

I noticed when I went to do the oil change that my cap said that as well. It also appeared to be a little low with 5 quarts so I put in one more. It doesn't seem to be overfilled.

Bay de Noc Lawn Car
06-28-2006, 11:27 PM
I used to use 10w30 and would have add some before the next oil change. This spring I had it in the shop for a new exaust so I had the oil changed to. With the 5w30 it used very little in oil 3000 miles, I did not have to add any.


I am now using 5w30.

hosejockey2002
06-29-2006, 11:28 PM
It probably takes six with a filter change, most gas trucks do. After you drain and change the filter, add five, start it up and make sure oil pressure builds, shut it down and wait a few minutes, check the oil and add until it's full.