What type of oil for 03 Tahoe?

[guero1197]

I have a 03 Tahoe 5.3L(Not Flex Fuel). Has around 186k miles on it. My dad has been putting 10W-40 oil before handing it to me.
I researched on AllData website and found out my truck needs 2 Dexos 5W-30 oil.
Is it fine if I switch and start putting 5W-30 dexos 2 oil ? I've read that the W now stands for "Winter" not "Weight".

 

[01ssreda4]

I use 10w30 pennzoil high mileage in all my cars over 100k miles.

 

[HiHoeSilver]

A good article.

http://www.popularmechanics.com/cars/how-to/a53/1266801/

 

[RaiderRodney]

Good article ^

Most everyone has an opinion on oil. But it depends on how you drive, where you live, etc. Older mileage vehicles scare some people away from synthetic oil, but not me. I made the switch in my 01 Hoe to Pennz Ultra Platinum 5W30 and haven't looked back. I could probably go up to a 10W30 with my location and the fact that I'm coming up on 150k miles but it's doing fine. Most places you read about it always list price as the biggest drawback, but if you figure in extended change intervals and that it does protect a smidge better....it's worth it to me. Besides, you can pick up the Pennz from Walmart for nearly the same price as conventional oil. Hell, I still run the Amsoil Signature Series 10W30 in my DSM.

Good luck researching and deciding. The most important factor is keeping it changed

 

[inmypassatlife]

I keep telling people, Super Tech at wally world is the best bang for the buck and plenty of info and analysis at bitog to back it up.

http://www.dieselplace.com/forum/76...tenance-fluids/836761-wal-mart-supertech.html

 

[MrBalll]

I've always done Pennzoil synthetic 5W-30.

 

[95escahoe]

I run 5w30 in my 160k mile 04 6.0 Escalade I'd stick to the recommended weight, I use Castrol GTX HM and a Wix or Napa Gold filter


Sent from my iPhone using Tapatalk

 

[ali saleh]

Use 20w50 if u have over 150k and get another 150k easily

 

[rockola1971]

the W still stands for weight and the 5w does mean the oil acts as a 5 weight in colder temperatures. That is because an engine is harder to turn over in the winter when the oil is cold and thickens. During the hot summer days the oil is nearer 30 weight (5w-30). You can look up the exact temp specs for any given oil. In the midwest I run Walmart Supertech synthetic 5w-30 in all of my Suvs and Truck.
Engines are: 99 5.7L. (2) 03 5.3L and a 05 6.0L. My 5.7L has around 275k on it now. I got it when it had 82K on it. 6.0L has just under 300K and the 5.3L's have 200k and 165k. Seems to be doing just fine.

 

[inmypassatlife]

the W still stands for weight and the 5w does mean the oil acts as a 5 weight in colder temperatures. That is because an engine is harder to turn over in the winter when the oil is cold and thickens. During the hot summer days the oil is nearer 30 weight (5w-30). You can look up the exact temp specs for any given oil. In the midwest I run Walmart Supertech synthetic 5w-30 in all of my Suvs and Truck.
Engines are: 99 5.7L. (2) 03 5.3L and a 05 6.0L. My 5.7L has around 275k on it now. I got it when it had 82K on it. 6.0L has just under 300K and the 5.3L's have 200k and 165k. Seems to be doing just fine.

Exactly, no need in wasting money on the placebo effect

 

[guero1197]

I know it's late but thanks for every ones responses. I've been doing 5w-30 for a while now, dexos 2 mobile 1 synthetic, trucks runs just fine and is getting her oil changes with 5w-30 since this was posted. Thanks again.

 

[Chubbs]

FYI it is "1 dexos"
That big swoosh just makes the trademark insignia look like a '2'
There is a 2dexos but that is a formulation for Diesel engines

http://www.centerforqa.com/dexos-brands/

A guy on Craigslist sold me an unopened case of AC Delco 5w30 1dexos full syn for $30

No idea what the previous owner last had it filled with but never had to add anything driving it since April.

So far so good after 1-month of running the full synthetic; I haven't checked in a while but the truck has around 128k miles on it.

 

[BlueCollarTahoe]

i got an 04...not sure what the previous owner has been putting in it...but i switched to Mobil 1 full syn. no issues related to the oil. put about 11k miles just under a year with oil changes consistently 3k miles. im happy with it for what it is worth.

 

[Miami-Dade]

Use 20w50 if u have over 150k and get another 150k easily

I put 20w50 in my 1996 Impala SS and thought the engine was going to blow up upon starting it up when cold..Went back to Mobil 1 5w30 and all was back to normal..Put 300K miles on it.

BTW I have never used high mileage oil in any vehicle and put 300K miles on just about all my vehicles.

 

[SnowDrifter]

I use a good HTHS 0w30 in mine. Personal choice is M1 0w30 ESP but there are others that fit the bill as well. That's just what happened to be readily available at the local parts store

 

[Gzes]

5w30 on my escalade and has over 200k. stepside same story but run royal purple

 

[BlueCollarTahoe]

am going to run the high mileage for a couple cycles of the Mobil 1 synthentic starting next oil change btw.

 

[mals]

am going to run the high mileage for a couple cycles of the Mobil 1 synthentic starting next oil change btw.

I think that generally once you start in on high mileage formulations you should stick with them. They have seal conditioners that help old seals "plump" to fill worn tolerance. Seals can then wear in again to seat to current gaps. If you stop with the high mileage oil there is the potential for seals to shrink back and then have larger gaps than when you started.

That being said, I started with a high mileage oil when I purchased my Yukon which had 155k last year.

 

[BlueCollarTahoe]

I think that generally once you start in on high mileage formulations you should stick with them. They have seal conditioners that help old seals "plump" to fill worn tolerance. Seals can then wear in again to seat to current gaps. If you stop with the high mileage oil there is the potential for seals to shrink back and then have larger gaps than when you started.

That being said, I started with a high mileage oil when I purchased my Yukon which had 155k last year.

you make a good point there. whats the lowest mileage youd start using it on? 100k? 120k?

 

[mals]

you make a good point there. whats the lowest mileage youd start using it on? 100k? 120k?

I use Penzoil Platinum High Mileage Synthetic and it says for vehicles over 75k. I know that is just marketing, but since there is no difference in price I see no reason to question it.

I started using it since I noticed a few minor leaks when I first purchased my Yukon. I think it has stopped most of them, and slowed the leak on my main rear seal to a minor drip. Last oil change I was down less than half a quart after a 5000 mile oil and filter change.