Amsoil 0W-30

Is 0W-30 oil OK for my 03 4.8? How many quarts does it actually hold with filter change?

Is 0W-30 oil OK for my 03 4.8? How many quarts does it actually hold with filter change?

Use the recommended oil weight that is in your user manual. I believe it is 5w-30. If you use anything thiner than 5w and thicker than 10w, then you could cause early termination to your enigne. If you truck is under warrenty, you could void it out.
How many miles on your truck? What year?

2003 70k The Amsoil site recommends 0w-30 it's there first choice there second is 5w-30

So when your engine Fails, are they going to cover the cost to repair it?
I don't think so, even if they claim it you would have to prove it.
Don't take the chance.. use the manufacture's recommendation. 5w-30

OK,I think I would feel better using the recommended weight too. Thanks for your input.

Your 4.8 hold 6 quarts w/filter change.

Thanks, may I ask what you use for oil?

5w30 Conventional. Normally Penzoil or whatever is reasonably priced. Not the cheapest, but not the most expensive.

A 0w30 can be used in the winter(i use it too,Mobil-1 0w30) without issues,i woundn't use it in the summer tho...

I also think that the 0W-30 oil may be more expensive. I used to run it but now run 5W-30.

Yes is is more expensive but amsoil says it's has more protection properties then the 5-30 and last longer.

Thanks, may I ask what you use for oil?

Ever since it's first oil change I have always used Castrol GTX 5w30
I now have 160K miles on it and it has never hicupped.
I am thinking about switching to the High milage, but I have not decided yet.

Mobil 1 fully synthetic, 5-w30, every 3000 miles or so, 50+k no problems, I change mine so often because I run my truck hard, everyday. This last change I threw 1qt of lucas synthetic oil treatment in.

They say there's not much difference in standard oils,is there with synthetic brands?

I'm probably the roughest person on a silverado here(countless nitrous bottles put through it) and I've had zero problems out of my 6.0L. I've always and will continue to always use the Castrol Synthetic blend 10w 30. I figure that if its held up to what I've put it through, it has to be a pretty good oil.

Just wondering, why don't you go all the way "full synthetic"?

Forgot to ask, do you change the oil after every run or use it for 6 months or so?

Forgot to ask, do you change the oil after every run or use it for 6 months or so?

I go 3000-5000 miles or 6 months, whichever comes first :grinyes: To be honest, when I started using it several years ago, I was still skiddish about going to a full synthetic, so I gave the blend a try. After running this for so long, I guess I kind of have the "if it ain't broke, don't fix it" mindset now. I do use Castrol Syntec in my camaro, and have had zero problems with it so far.

Thanks for the response, I understand.

Just out of curiousity, how the hell can 0-30 have more protection properties than 5-30?

Just out of curiousity, how the hell can 0-30 have more protection properties than 5-30?
It's lower cold viscosity(0w) will flow quicker to vital areas faster, thus
reducing start up wear,where most of the wear on an engine happens.

You are not going to see much differance in 0w and 5w. Unless you live in Alaska. Do you?

The problem with 0w oil is that they do not do as well when the engine gets hot, because it does not have the viscosity to resist the heat. The Oil will break down faster.
Again, will Amsoil pay for the engine repairs when it breaks down?

I talked to the Amsoil tech support and they said, the only difference in protection is for cold starting they both work the same at operating temperture.

Do you what you feel comfortable with

Thanks I'm comfortable with what you said 5w-30w

Hey, I saw the posts about the warranty issues and I see no other dealer of AMSOIL has responded. I figure I need to set the record straight. First, I am a INDEPENDENT DEALER OF AMSOIL, I AM NOT POSTING THIS TO GET YOUR BUSINESS. I just want the facts to be out there, not speculation. Here is the Text of AMSOIL's warranty. Personally I have yet to have someone need it, but if it does happen to one of my customers, I will personally (If they are within a reasonable distance from me (100 miles or so)) come out and draw a sample to be sent out. Now, if your across the country from me I would ship out my sampler system out to you and a pre-paid envelope to send off the sample. That is just what I would do, I can not vouch for another dealers actions, that is just how I treat my customers.

And before you read this, the 0w-30 product is our 25k mile oil. The 5w-30's can be had in 10k interval and OEM interval.

AMSOIL Limited Warranty – Lubricants
(for the 50 United States, the District of Columbia and Canada)
AMSOIL INC. of Superior, Wisconsin hereby warrants that, at the time of sale, its lubricants are fit for use according to the
written recommendations of AMSOIL INC. and in applications for which one or more of the standards set forth in the product
data bulletins and product labels are specified. AMSOIL INC. further warrants its products to be free of defective materials,
design and workmanship.
THIS WARRANTY IS SUBJECT TO THE FOLLOWING LIMITATIONS AND GENERAL DISCLAIMER:
1. This warranty only applies to AMSOIL lubricants for which AMSOIL does not offer a separate, specific warranty.
2. The warranty herein applies only to AMSOIL lubricants that are packaged by AMSOIL INC. and sold by AMSOIL INC. or
an authorized Dealer.
3. The liability of AMSOIL INC. shall be limited to:
a. Replacement of the defective lubricant.
b. The cost, including labor and materials, to repair, or at the option of AMSOIL INC., to replace damaged components
lubricated by AMSOIL products according to AMSOIL recommendations.
4. IN NO CASE SHALL AMSOIL INC. BE LIABLE FOR SPECIAL, INCIDENTAL OR CONSEQUENTIAL
DAMAGES INCLUDING, BUT NOT LIMITED TO, DAMAGE OR LOSS OF OTHER PROPERTY OR
EQUIPMENT, LOSS OF PROFITS OR REVENUE, COST OF CAPITAL, BUSINESS INTERRUPTION,
LODGING, TOWING OR COST OF REPLACEMENT EQUIPMENT. THE LIABILITY OF AMSOIL
INC. ARISING OUT OF THE MANUFACTURE, SALE, DELIVERY, INSTALLATION, TECHNICAL
DIRECTIONS OR RECOMMENDATION OF ANY LUBRICANT – WHETHER IN CONTRACT, TORT,
WARRANTY OR OTHERWISE – SHALL NOT EXCEED THE VALUE OF THE EQUIPMENT IN WHICH
THE PRODUCT(S) WERE USED. THE REMEDIES TO THE PURCHASER HEREIN ARE EXCLUSIVE.
5. In the event of a claim against AMSOIL INC., the procedure below must be completely followed:
a. Where the original warranty from the equipment manufacturer is still in effect, the customer shall file a warranty claim with
the Original Equipment Manufacturer (OEM) in accordance with the OEM warranty procedures.
b. Customer shall retain failed parts for inspection by AMSOIL INC. unless given to the OEM.
c. Customer shall also, within 30 days of failure, notify AMSOIL INC. and provide the following:
(a) An eight (8) ounce representative oil sample taken from the failed equipment and put into a clean, dry container.
(b)Documentation including make, model and year of equipment, total accumulated miles and/or hours and duty cycle or
service environment.
(c) Equipment or vehicle maintenance history documentation including miles or hours at the time of AMSOIL lubricant
installation, general equipment repairs and oil analysis results if available.
(d) Proof of purchase for AMSOIL lubricant.
(e) Batch number from oil container or Certificate of Analysis (if available).
d. Mail the above sample and information to: AMSOIL INC., ATTN: Technical Services, One AMSOIL Center, Superior, WI
54880
e. In cases where the OEM warranty is still in effect and that warranty coverage is denied based on the use of an AMSOIL
lubricant, the customer shall immediately notify AMSOIL INC. and provide a written copy of the OEM warranty denial.
f. AMSOIL INC. may, at its option, notify its insurance carrier of the claim.
g. AMSOIL INC. or its insurance carrier may conduct an investigation that includes, but is not limited to, an inspection of the
failed parts, a review of the operating conditions and a thorough review of the information requested above. The customer
agrees to cooperate with such investigation.
h. If AMSOIL INC. or its insurance carrier pays a claim, an attempt may be made to recover amounts paid from the OEM.
If this occurs, the customer may be asked to provide further information pertaining to the failure and to cooperate with
AMSOIL INC. or its insurer in the recovery process.

So when your engine Fails, are they going to cover the cost to repair it?
I don't think so, even if they claim it you would have to prove it.


As a matter of fact they will
all they will ask for is a sample of the oil

https://www.amsoil.com/lit/g1363.pdf

and btw the 0w30 has change to a oil meeting newer car standards
read about the new oils here
http://www.firstplaceoils.com/index.html