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Going up a grade in 14 Silverado? #4519637
09/18/17 05:42 PM
09/18/17 05:42 PM
Joined: Jul 2013
Posts: 117
NC
lawrencerd Offline OP
lawrencerd  Offline OP
Joined: Jul 2013
Posts: 117
NC
My dad has been asking me about the advisibilty of going up a grade in his truck. He has the 5.3 ecotec3 and GM is pretty clear that 0w-20 is the only recommended grade. However he is interested because he tows a lot in running 5w-30 instead. Because the truck has VVT, cylinder deactivation, and a variable speed oil pump I'm not sure how to advise. Has anyone done this? Warranty is not a primary concern. The plan is to keep the truck forever.

Re: Going up a grade in 14 Silverado? [Re: lawrencerd] #4519660
09/18/17 06:10 PM
09/18/17 06:10 PM
Joined: Jan 2013
Posts: 1,414
America's Dairyland
LotI Offline
LotI  Offline
Joined: Jan 2013
Posts: 1,414
America's Dairyland
5w-30. GM has been running this grade for years. Stick with it. 10w-30 if you don't expect really cold starts or find a good deal.

My last 3 cars have recommended 0w-20 and I ran Xw-30 with no difference in fuel economy or cold starting.


03 Honda Interceptor
11 Kawasaki KLR 650
12 Ford E450
17 VW GTI
[IMG]http://badges.fuelly.com/images/sig-us/803455.png[/IMG]
Re: Going up a grade in 14 Silverado? [Re: lawrencerd] #4519695
09/18/17 06:43 PM
09/18/17 06:43 PM
Joined: Oct 2007
Posts: 1,548
utah
dareo Offline
dareo  Offline
Joined: Oct 2007
Posts: 1,548
utah
Not sure that i've seen a UOA suggesting 0W20 isn't enough for these engines. Perhaps try running the spec and getting it tested.


2016 Golf Wagon 5MT, 2014 Accord Sport 6MT, 2016 GMC 1500 SLT 6.2
Re: Going up a grade in 14 Silverado? [Re: lawrencerd] #4519707
09/18/17 06:57 PM
09/18/17 06:57 PM
Joined: Jul 2014
Posts: 80
Michigan
Oli20 Offline
Oli20  Offline
Joined: Jul 2014
Posts: 80
Michigan
Member Gonefishing has posted UOA's for both 0w-20 and 0w-30 for that motor. If I remember correctly there wasn't much difference.

Last edited by Oli20; 09/18/17 06:59 PM.

2014 Silverado LTZ 5.3 3.42
Re: Going up a grade in 14 Silverado? [Re: lawrencerd] #4519719
09/18/17 07:07 PM
09/18/17 07:07 PM
Joined: Mar 2008
Posts: 7,324
USA
slacktide_bitog Offline
slacktide_bitog  Offline
Joined: Mar 2008
Posts: 7,324
USA
Use a dexos 5w30 smile

Re: Going up a grade in 14 Silverado? [Re: lawrencerd] #4519726
09/18/17 07:14 PM
09/18/17 07:14 PM
Joined: Dec 2006
Posts: 19,115
Dallas,Tx USA
aquariuscsm Offline
aquariuscsm  Offline
Joined: Dec 2006
Posts: 19,115
Dallas,Tx USA
Cylinder deactivation would scare me away from using a thicker oil. I wonder if that's the equivalent to repeated "cold starts",hence the 0W20 spec?


1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Quaker State Ultimate Durability 10W30
2012 Honda Accord Coupe EX-L 2.4,auto,San Marino Red
Quaker State Ultimate Durability 10W30

Re: Going up a grade in 14 Silverado? [Re: lawrencerd] #4519874
09/18/17 10:21 PM
09/18/17 10:21 PM
Joined: Jan 2011
Posts: 3,254
PV Az
AZjeff Offline
AZjeff  Offline
Joined: Jan 2011
Posts: 3,254
PV Az
My '16 Ecotec 4.3 specs 5w-30 and has the same trickery as the 5.3, wonder why the different oil spec? Might want to go over to silveradosierra.com and see what they say about it there.


86 Samurai 1.3 leftovers
14 RAV4 2.5 5W-20 PP
16 Silverado 1500 4.3, DI, AFM 5W-30 PP

The most important thing to do in your life is to not interfere with someone else's life. - Frank Zappa

Re: Going up a grade in 14 Silverado? [Re: lawrencerd] #4519877
09/18/17 10:26 PM
09/18/17 10:26 PM
Joined: Nov 2011
Posts: 4,967
MTL, CANADA
Rolla07 Offline
Rolla07  Offline
Joined: Nov 2011
Posts: 4,967
MTL, CANADA
I find it hilarious that people automatically assume that using 0w20 = wont be able to handle towing or anything too harsh. Not sure you will see any difference using 5w30 so why not just keep using whats recommended? What benefit do you expect to see by using 5w30?


2007 Corolla Red Pearl 155k miles
PP 0w20 & ST 4967

Re: Going up a grade in 14 Silverado? [Re: lawrencerd] #4519921
09/18/17 11:40 PM
09/18/17 11:40 PM
Joined: Mar 2011
Posts: 411
new jersey
hemitruck Offline
hemitruck  Offline
Joined: Mar 2011
Posts: 411
new jersey
On a ram forum, some are using 5/30 in the 5.7 with mds without any issues. Seems the benefit is eliminating the hemi tick.

Re: Going up a grade in 14 Silverado? [Re: Rolla07] #4519967
09/19/17 02:06 AM
09/19/17 02:06 AM
Joined: Jul 2013
Posts: 117
NC
lawrencerd Offline OP
lawrencerd  Offline OP
Joined: Jul 2013
Posts: 117
NC
Originally Posted By: Rolla07
I find it hilarious that people automatically assume that using 0w20 = wont be able to handle towing or anything too harsh. Not sure you will see any difference using 5w30 so why not just keep using whats recommended? What benefit do you expect to see by using 5w30?



I'm just asking to get opinions and see if anyone has done it. I didn't get too far with UOA searches because it's an out of spec oil that I'm thinking of. It would make him feel a little better to use it when towing 10,000+ lbs. Even without a trailer the truck is loaded with tools constantly. I suppose the expected benefit is some additional protection and longevity. Thanks for the input.


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