What's the recommeded oil for a 5.3?

[walther78]

About time for my first oil change on my 2003 with 49,000 miles on it. The previous owner used oil from O'reilly auto but I'd like to use something different. I've always used Valvoline NON-synthetic in all my other vehicles with no issues. Is there a favorite/specific oil that the 5.3l V8's like?

 

[iLikeEggs]

Mobil 1. Been using it since it was graphite. These days I don't think there's too much difference between synthetics though. I j like to brand and the gray jugs of it look nice I'm the garage.
With miles that low though why not go with Amsoil or Royal Purple? Either way it's high quality. The one major benefit you get from using synthetic is that you can stretch out your oil change intervals. With my two previous GM vehicles I used Mobil 1 and changed every 10-12k. Never had one problem with the motors. Took my S10 Blazer to 180k and my Envoy to 111k. I also use it in my 02 Rav4 that I had since new. It's pushing 130k right now and no problems. However, as always...your mileage may vary.

 

[ccapehartusarmyINF.(ret)]

ive actually a whole 1 MPG increase just by using royal purple alone
i just bought a 01 suburban and with what ever oil was in it before i drove through 2 tanks of gas completely and got like 14.26 and 14.38 mpg and then i had the oil changed with royal
and the last to tanks i drove i got 15.1 and 15.34 mpg and it was all in town and some freeway driving also my engine is much quieter with royal when it starts now with old stuff it was very noisy when you first started it in the morning

 

[ccapehartusarmyINF.(ret)]

my numbers are pretty accurate becuase i drove all the tanks completely outta gas ( puh puh puh blah)

 

[07Burb]

I use Valvoline Max Life 10w-30 and have been happy

 

[ccapehartusarmyINF.(ret)]

i guess everyones got there own favorite

 

[4WDTRK]

Another vote for Mobil 1.

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[iLikeEggs]

ive actually a whole 1 MPG increase just by using royal purple alone
i just bought a 01 suburban and with what ever oil was in it before i drove through 2 tanks of gas completely and got like 14.26 and 14.38 mpg and then i had the oil changed with royal
and the last to tanks i drove i got 15.1 and 15.34 mpg and it was all in town and some freeway driving also my engine is much quieter with royal when it starts now with old stuff it was very noisy when you first started it in the morning

Nice! I've been thinking about the Royal Purple. My buddy has a Yukon with it and has 278k on the clock.

 

[ezdaar]

I grind up smurfs and baby unicorns.
I mix them 30/70 and sometimes add a pinch of kitten blood to clean the engine.
I use panda skin as a filter.

Since the switch, i gained 12mpg city and 21hwy.

 

[tunedbytuna]

I use 5W30 Mobil 1 Full Synthetic, started at 46K, switched to the High Mileage One after about 75K, now at 103K. I do change it every 4K, wife does a lot of short trips. Runs excellent. Averages 15.3 mixed around Town Driving and about 18.5 Highway.


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[CHOO CHOO]

I use the same as mr. Tuna but not high mileage yet. I just hit 120k and have been running mobil 1 for about 40k that i have owned it. I change every 5k-7k miles and have not experienced any problems what so ever. No fancy filter here either. Mobil 1 is cheap but still higher grade imo. Great oil for a good price. Royal and amsoil is great but too big of a hassle and more money than its worth in time to get it imo.

 

[jough]

Yes to above. Mobile One 5w-30 High Mileage. It has more additives than regular Mobile One or Extended Life M1.
If you want to go cheaper, then use Wal-Mart 5w-30 full synthetic.
If you want to go even more cheap, use a synthetic/dino blend.

There is a reason that high performance cars come from the factory with full synthetic oil....friction reduction, improved gas mileage, increased engine life, way better flow in cold temperatures, etc.

I get a 5 qt. jug of M1 HM 5w-30 and use 1 qt. of Wal-Mart full synthetic to top it off.

 

[TheAutumnWind]

Whatever full synthetic is on sale. Mobil 1 and Pennzoil have MIR's ATM. I paid $11 for 5 qts after MIR of Mobil 1 recently.

*Edit whoops I meant to say Pennzoil recently.

 

[CHOO CHOO]

Whatever full synthetic is on sale. Mobil 1 and Pennzoil have MIR's ATM. I paid $11 for 5 qts after MIR of Mobil 1 recently.

Where you find that much in rebates at? I seen a $15 and $12 rebate on mobil website. Thats insane. Help a brotha out!

 

[TheAutumnWind]

Where you find that much in rebates at? I seen a $15 and $12 rebate on mobil website. Thats insane. Help a brotha out!

http://www.amazon.com/gp/product/B00ELHNM3K?psc=1&redirect=true&ref_=oh_aui_detailpage_o08_s00

http://www.fallmir2015.com/

S&S makes it $21 shipped to my door, and -$10 MIR (which i dont even have to mail in I just upload the PDF) for 5 quarts = $11

Whoops i said Mobil 1 and it was Pennzoil. I've done the same with Mobil One in the past.

 

[CHOO CHOO]

Its all good. Thanks man!

 

[SLCHOE]

About time for my first oil change on my 2003 with 49,000 miles on it. The previous owner used oil from O'reilly auto but I'd like to use something different. I've always used Valvoline NON-synthetic in all my other vehicles with no issues. Is there a favorite/specific oil that the 5.3l V8's like?

First of all, to answer your question, 5W30.

Secondly, since you have low miles on it, switch over to full synthetic right now. This will prolong the life of your seals (rear-main = $$$) and does a better job all around mechanically.

Choose your brand. I like Castrol Edge but any full synthetic oil will do the job.

 

[diLucca]

Maybe dumb quest, but i had 177k miles and in past 6 years previous owner used 10W-40, it is good idea to switch back on 5W? Especialy on Mobil 5W-50 or Valvoline 10W-60?

 

[4WDTRK]

Odd decision to use 10W-40. I would switch back to 5W-30. Bet mileage might improve a bit.

 

[diLucca]

I think soo, I last used 10W in BMW M30 engine(E34 535i) because of wear on camshaft.
But after 6years, will it hurt when switch back to 5W oil?