Why don't car manufacturers recommend 10w30 today especially with all the turbo models sold now I would think it would hold up better under hard use?
Why no 10w30
- Thread starter Camprunner
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It's an old spec. Plenty of 5w30 and 0w30 out there still.
While not new, my mother-in-law's 2010 Dodge Journey V6 calls for 10w-30. The dealer just put in PYB 10w-30 and she lives near Superior, WI!
Originally Posted By: Camprunner
Why don't car manufacturers recommend 10w30 today especially with all the turbo models sold now I would think it would hold up better under hard use?
You're probably correct. My most recent UOA was a 10w-30; it was my best ever and was used through this past winter.
Why don't car manufacturers recommend 10w30 today especially with all the turbo models sold now I would think it would hold up better under hard use?
You're probably correct. My most recent UOA was a 10w-30; it was my best ever and was used through this past winter.
Hyundai/Kia will allow use of 10w-30 in many of their engines.
Going to QSUD 10w-30 as a summer oil in the 1.6 GDI Soul due to fuel dilution.
Going to QSUD 10w-30 as a summer oil in the 1.6 GDI Soul due to fuel dilution.
1. CAFE, 5w30 gives slightly better lab numbers for fuel economy during the warmup phase.
2. 5w-30 is good for pretty much anywhere in the US as far as cold starting is concerned.
My .02
2. 5w-30 is good for pretty much anywhere in the US as far as cold starting is concerned.
My .02
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Originally Posted By: mx5miata
newer engines with tighter tolerances and fuel economy also easy flow at cold temp starts. I am pretty sure Chevy and Ford turbocharged cars use 5w30
Your statement about tolerances is wrong. This has been parroted on the internet for ages and it is wrong. Engines can operate on a broad range of grades. The engine that calls for 0w-20 in America is often run with 5w-30 or 10w-40 in Europe.
newer engines with tighter tolerances and fuel economy also easy flow at cold temp starts. I am pretty sure Chevy and Ford turbocharged cars use 5w30
Your statement about tolerances is wrong. This has been parroted on the internet for ages and it is wrong. Engines can operate on a broad range of grades. The engine that calls for 0w-20 in America is often run with 5w-30 or 10w-40 in Europe.
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Originally Posted By: ka9mnx
While not new, my mother-in-law's 2010 Dodge Journey V6 calls for 10w-30. The dealer just put in PYB 10w-30 and she lives near Superior, WI!
Son’s 2007 300 (Pentastar) is the last thing we bought calling for 10w30 … his 2013 Pentastar is a 5w20 engine …
While not new, my mother-in-law's 2010 Dodge Journey V6 calls for 10w-30. The dealer just put in PYB 10w-30 and she lives near Superior, WI!
Son’s 2007 300 (Pentastar) is the last thing we bought calling for 10w30 … his 2013 Pentastar is a 5w20 engine …
The only thing I use 10w30 is in my lawn tractor and this a diesel rated oil T5 ROTELLA. ED
Originally Posted By: SilverFusion2010
Originally Posted By: mx5miata
newer engines with tighter tolerances and fuel economy also easy flow at cold temp starts. I am pretty sure Chevy and Ford turbocharged cars use 5w30
Your statement about tolerances is wrong. This has been parroted on the internet for ages and it is wrong. Engines can operate on a broad range of grades. The engine that calls for 0w-20 in America is often run with 5w-30 or 10w-40 in Europe.
true. Clearances have not changed since the 40's.
Originally Posted By: mx5miata
newer engines with tighter tolerances and fuel economy also easy flow at cold temp starts. I am pretty sure Chevy and Ford turbocharged cars use 5w30
Your statement about tolerances is wrong. This has been parroted on the internet for ages and it is wrong. Engines can operate on a broad range of grades. The engine that calls for 0w-20 in America is often run with 5w-30 or 10w-40 in Europe.
true. Clearances have not changed since the 40's.
Originally Posted By: Okapi77
Hyundai/Kia will allow use of 10w-30 in many of their engines.
Going to QSUD 10w-30 as a summer oil in the 1.6 GDI Soul due to fuel dilution.
Mine is one of them. Will use Chevron Supreme 10w-30 this Thursday when I change oil in the Elantra. It is MPI and needs nothing special. In Autralia 10w-30 is the recommended weight. USA 5w-20. Heat index is 100 today so flow should not be a problem.
Hyundai/Kia will allow use of 10w-30 in many of their engines.
Going to QSUD 10w-30 as a summer oil in the 1.6 GDI Soul due to fuel dilution.
Mine is one of them. Will use Chevron Supreme 10w-30 this Thursday when I change oil in the Elantra. It is MPI and needs nothing special. In Autralia 10w-30 is the recommended weight. USA 5w-20. Heat index is 100 today so flow should not be a problem.
My Toyota Corolla gets 38 to 40 on the Hi-way with no sweat on 5w-30 or 10w-30 in the summers. But then its just broke in at 121K miles. 34 to 36 in town.
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Originally Posted By: Camprunner
Why don't car manufacturers recommend 10w30 today especially with all the turbo models sold now I would think it would hold up better under hard use?
CAFE
Gas mileage laws must be met by auto manufacturers. Thinner oil aids in better gas mileage.
Why don't car manufacturers recommend 10w30 today especially with all the turbo models sold now I would think it would hold up better under hard use?
CAFE
Gas mileage laws must be met by auto manufacturers. Thinner oil aids in better gas mileage.
Originally Posted By: Camprunner
Why don't car manufacturers recommend 10w30 today especially with all the turbo models sold now I would think it would hold up better under hard use?
The only reason is the marginal increase in economy with a 5W, and marketing by the oil companies.
You're correct; 10W will hold up better in an engine that's hard on oil, such as my 2016 WRX (turbo, GDI, boxer, high power density). Which is why I run PPPP 10W-30 year-round, when it calls for a 5W.
10Ws will also have much lower NOACK. PPPP is the best you'll find outside of an expensive boutique oil, at 4.7%. Matter of fact, I actually don't know of a boutique oil with better NOACK values. Maybe some kind of straight-grade might beat it.
Lively NOACK discussion going on Here currently.
Why don't car manufacturers recommend 10w30 today especially with all the turbo models sold now I would think it would hold up better under hard use?
The only reason is the marginal increase in economy with a 5W, and marketing by the oil companies.
You're correct; 10W will hold up better in an engine that's hard on oil, such as my 2016 WRX (turbo, GDI, boxer, high power density). Which is why I run PPPP 10W-30 year-round, when it calls for a 5W.
10Ws will also have much lower NOACK. PPPP is the best you'll find outside of an expensive boutique oil, at 4.7%. Matter of fact, I actually don't know of a boutique oil with better NOACK values. Maybe some kind of straight-grade might beat it.
Lively NOACK discussion going on Here currently.
^^^^^^. This. ^^^^^^^^
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