Oil weight question

[02suburbanZ71]

Changing the oil next week. The temps are now in the 50s-30's. I know thicker oil is less efficient, does thicker oil increase the oil pressure? Will i lose a mpg in these temps with thicker oil. Also will a thinner oil help me with performance i do a lot of revving up to 6K and i want the oil pressure pegged but do not want to lose any performance due to a thicker oil. Please excuse my oil ignorance, just trying to find the best weight oil to suit my needs

[Black02Silverado]

The best oil for your application is 5w-30 which is what the manufacture recommends. It will protect the best as well as offer the best economy for your vehicle. No need to over think oil. Now if you ran NHRA or NASCAR then it would be a different story.

[02suburbanZ71]

That answers it. Thank you. I was just concerned about it because i rev to 6K all the time

[Black02Silverado]

That answers it. Thank you. I was just concerned about it because i rev to 6K all the time

 

No problem at all. I redline my Camaro every time I take it out and my used oil analysis (UOA) came back just fine running AMSOIL's OE 5w-30.

[02suburbanZ71]

Where can i buy amsoil. Will walmart, farm n fleet or autozone have it?

[Black02Silverado]

Unfortunatly those outlets will not carry it. You can see if a local NAPA, Car Quest or indepentent parts store carries it or purchase it from me. If you want to be able to pick it up local. You can go to AMSOIL's web page and look for a dealer near you.

 

If you are interested, let me know how many qts you want and I can get you a quote delivered to your door.

[dolphinsleb]

I have another question about this, everything I've owned lately, all GM, has called for 5w30 which I use in winter months, during the summer I switch to 10w30 because of the outside temperature being over 100, what do you think about continuing this tradition in the 14 traverse I just picked up for my wife, just want to hear others opinions on this, my step father was a car guy, and always did the same thing with all his fords which is why I've always done it

[sdeeter19555]

They are both 30 weights at operating temp...the "10" gives no advantage in the summer.

[billyhinson]

They are both 30 weights at operating temp...the "10" gives no advantage in the summer.

Absolutely right. The designator "w" stands for winter, so the only thing you would be doing is changing the cold cranking aspect of the oil.

[Cowpie]

Where can i buy amsoil. Will walmart, farm n fleet or autozone have it?

 

You can order it online if you have a mind to do so. I would recommend shelling out a few bucks for the preferred customer thing and get some pretty good discounts on products when you order. Kinda like having a Costco or Sam's Club membership. I think that membership gives you 25% or so off of regular retail Amsoil pricing. I have it, as I do get a few products from Amsoil from time to time, especially gear lubes and tranny fluids. I use another brand of engine oil that I get from my commercial oil supplier.

 

There are some technical arguments that can be made by folks in lab coats that there is some actual advantages to using a 10w30 in the summer compared to a 5w30. It has to do with the level of viscosity improvers that are required. For that average driver, it is a non issue. Folks here have it right. The number in front of the "w" has only to do with winter flow rate, nothing to do with the viscosity of the oil at operating temps.

[Black02Silverado]

I have another question about this, everything I've owned lately, all GM, has called for 5w30 which I use in winter months, during the summer I switch to 10w30 because of the outside temperature being over 100, what do you think about continuing this tradition in the 14 traverse I just picked up for my wife, just want to hear others opinions on this, my step father was a car guy, and always did the same thing with all his fords which is why I've always done it

Stick with what GM recommends, 5w-30. No need to switch back and forth. The summers here in Eastern NC get into low 100's and I run 0w-30 year round. Today's oils have come a long way and vehicle manufactures put serious R&D into their products.

 

 

Sent from my MaxiPad

[txab]

Stick with what GM recommends, 5w-30. No need to switch back and forth. The summers here in Eastern NC get into low 100's and I run 0w-30 year round. Today's oils have come a long way and vehicle manufactures put serious R&D into their products.

 

 

Sent from my MaxiPad

 

 

 

^^^^ Agreed

[dolphinsleb]

Thanks

 

 

Sent from my iPhone using Tapatalk

[Cowpie]

Stick with what GM recommends, 5w-30. No need to switch back and forth. The summers here in Eastern NC get into low 100's and I run 0w-30 year round. Today's oils have come a long way and vehicle manufactures put serious R&D into their products.

 

 

Sent from my MaxiPad

 

 

Reviving this a little. Noticed the Amsoil dealer signature on your post. All it takes is some basic data sheet viewing to see some advantages of a 10w30 over 5w30 or 0w30, right on Amsoil's own site. NOACK (burn off vaporization rate) is lower for a 10w30 than the others. And in some cases, high temp high shear (HTHS) rating is better also. A 10w30, especially the Amsoil variety, hardly requires any viscosity improvers (VI) to meet the 10w30 classification. Some of the Amsoil 10w30 products, none at all. The 5w30 and 0w30 oils have to use some VI to get the range they are made for. It is the VI that tends to shear under pressure and screw with the viscosity over the oil change interval. It also is what contributes to the NOACK rate being higher. I have had 10w30 synthetics shear considerably less than even 15w40 synthetic oils based on dozens of used oil samples.

 

True, oil blenders and engine OEM's put a lot of R&D into their various products, but OEM's also do a "one size fits all" methodology based on the lowest brain wave activity of the consumer. They figure in that the vehicles will be used from Florida to Alaska, so they will blanket use a recommendation that covers the majority of that. I have no problem with that, generally, but also realize what I am dealing with. While you may use a 0w30 in NC, it would take me moving back to Fairbanks, AK to even consider a 0w30.

 

I use a 10w30 year round in Iowa for almost everything that I operate, from Yamaha portable generators on up thru my commercial semi truck. Different types of 10w30 depending on application, but 10w30 nonetheless. Primarily because of the characteristics of a 10w30 that I mentioned. Each can make up their own mind and go with what helps them sleep well at night.

[Black02Silverado]

 

 

Reviving this a little. Noticed the Amsoil dealer signature on your post. All it takes is some basic data sheet viewing to see some advantages of a 10w30 over 5w30 or 0w30, right on Amsoil's own site. NOACK (burn off vaporization rate) is lower for a 10w30 than the others. And in some cases, high temp high shear (HTHS) rating is better also. A 10w30, especially the Amsoil variety, hardly requires any viscosity improvers (VI) to meet the 10w30 classification. Some of the Amsoil 10w30 products, none at all. The 5w30 and 0w30 oils have to use some VI to get the range they are made for. It is the VI that tends to shear under pressure and screw with the viscosity over the oil change interval. It also is what contributes to the NOACK rate being higher. I have had 10w30 synthetics shear considerably less than even 15w40 synthetic oils based on dozens of used oil samples.

 

True, oil blenders and engine OEM's put a lot of R&D into their various products, but OEM's also do a "one size fits all" methodology based on the lowest brain wave activity of the consumer. They figure in that the vehicles will be used from Florida to Alaska, so they will blanket use a recommendation that covers the majority of that. I have no problem with that, generally, but also realize what I am dealing with. While you may use a 0w30 in NC, it would take me moving back to Fairbanks, AK to even consider a 0w30.

 

I use a 10w30 year round in Iowa for almost everything that I operate, from Yamaha portable generators on up thru my commercial semi truck. Different types of 10w30 depending on application, but 10w30 nonetheless. Primarily because of the characteristics of a 10w30 that I mentioned. Each can make up their own mind and go with what helps them sleep well at night.

All good information. One thing the individual posted was wanting to run a 10w-30 in his 2014 Traverse. If he can find a dexos 1 10w-30 that would work well to stay within warranty. Most like to keep things simple and not wanting issues during warranty periods.