Valvoline Article on Thinner vs Thicker Oils

[OVERKILL]

Originally Posted By: VR1
There's a reason they choose that viscosity for the area. You don't know how that engine has been set up for where it will be used. For all we know tolerances can be alot looser depending on where you are. I still think there's a reason they choose what should be used why second guess that?


I think you mean clearances.

And the Ford modular clearances are the same for a given engine regardless of the continent they are on. That is but one example!

We have CAFE in North America. The rest of the world does not. I think that is a big reason for the push to lighter and lighter oils, with only the ultra-high performance members of a given engine family getting spec'd for the heavier stuff because their low sales have an insignificant impact upon CAFE.

 

[friendly_jacek]

Originally Posted By: VR1
You guys kill me if it calls for 5w-20 run it and call it a day don't try to deviate away from what is stated. The hard work is done for you. How hard is it to use what is called for? Don't try to reinvent the wheel Jesus [censored]!


Let me see, you resurrected this old thread just to tell us these pearls of wisdom? Maybe BITOG is not for you?

 

[oily boyd]

Somebody's got a bee in their bonnet!

 

[Steve S]

Originally Posted By: CourierDriver
Ford I know specs 5w20, several of my acquaintances tried heavier oils in their fords, the mileage went down and ford says not to use but what they spec because its can blow the heads, mess up the cam and so on.
Not so . No way !Total Cafe double speak.

 

[Steve S]

Review this !!!https://bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=1898269&Searchpage=1&Main=132331&Words=oasis&Search=true#Post1898269

 

[Jeff_in_VABch]

Originally Posted By: Cujet
...Also, I discovered that air cooled generators that recommend 10-30 failed like crazy after the hurricanes. While Mobil 1 15w50 saves the day. You be the judge.


I saw a lot of generator failures too when owners are not really watching the oil conditions. I think generators tend to run the motors at a high load (sometimes nearly overloaded) and usually run up very high hours after a hurricane with small (1Qt or less) crankcase oil capacites.

My 15KW house BU generator has a 1L Generac engine and runs great after 500+ hours and 9 years. Ran Rotella T 5W40 for years and now run Mobil 1 Extended Performance 10w30.

 

[Clevy]

Originally Posted By: VR1
There's a reason they choose that viscosity for the area. You don't know how that engine has been set up for where it will be used. For all we know tolerances can be alot looser depending on where you are. I still think there's a reason they choose what should be used why second guess that?

Sorry man. You don't have a clue what your talking about. My 2000 mustang tells me to use 5w-20 in a 4.6 liter motor. The 1999 mustang specs 5w30. Now I know for a fact those 2 engines are identical. Why the discrepancy there big guy. And another interesting fact is that the 2000 mustang gt in australia is spec'd 5w30. Same car,same parts,different spec. And European auto makers spec a different oil when the cars are exported to the U.S.....why, CAFE Laws. And don't go giving me this guff about the Aussies needing thicker oil due to climate,summers are just as hot on this continent.
The Europeans have mandated that European car manufactures spec an oil that makes the engines last longer and oil that goes farther in between changes because they have chosen to reduce their use of natural resources. So go ahead and bury your head in the sand and not think for yourself,don't question why. Just believe what they tell ya I suppose. I on the other hand question everything and I want to know why. So I educate myself on the issue. I suggest you do the same. It will save you from looking stupid. Oops. Too late

 

[BMWTurboDzl]

Originally Posted By: Clevy
Originally Posted By: VR1
There's a reason they choose that viscosity for the area. You don't know how that engine has been set up for where it will be used. For all we know tolerances can be alot looser depending on where you are. I still think there's a reason they choose what should be used why second guess that?

Sorry man. You don't have a clue what your talking about. My 2000 mustang tells me to use 5w-20 in a 4.6 liter motor. The 1999 mustang specs 5w30. Now I know for a fact those 2 engines are identical. Why the discrepancy there big guy. And another interesting fact is that the 2000 mustang gt in australia is spec'd 5w30. Same car,same parts,different spec. And European auto makers spec a different oil when the cars are exported to the U.S.....why, CAFE Laws. And don't go giving me this guff about the Aussies needing thicker oil due to climate,summers are just as hot on this continent.
The Europeans have mandated that European car manufactures spec an oil that makes the engines last longer and oil that goes farther in between changes because they have chosen to reduce their use of natural resources. So go ahead and bury your head in the sand and not think for yourself,don't question why. Just believe what they tell ya I suppose. I on the other hand question everything and I want to know why. So I educate myself on the issue. I suggest you do the same. It will save you from looking stupid. Oops. Too late
Australia used to have unrestricted speed zones until 2007. IIRC some areas may still have them so you should come up with another example as to why it's only about CAFE in the US. Ofcourse europe still has some autobahns

 

[bob4558]

I have a 1998 jeep grand 5.2 v8 with 216,000 miles if i put 5w30 like it calls for oil presure at idle reads "0" when hot!! So i run Rotella 15w40 with a quart of lucas works great!

 

[Clevy]

Originally Posted By: CourierDriver
Ford I know specs 5w20, several of my acquaintances tried heavier oils in their fords, the mileage went down and ford says not to use but what they spec because its can blow the heads, mess up the cam and so on.

These same motors are spec'd for a 5w30 in Australia. Their heads and cams are fine. Don't drink the Kool-aid

 

[Clevy]

Originally Posted By: OVERK1LL
Originally Posted By: VR1
There's a reason they choose that viscosity for the area. You don't know how that engine has been set up for where it will be used. For all we know tolerances can be alot looser depending on where you are. I still think there's a reason they choose what should be used why second guess that?


I think you mean clearances.

And the Ford modular clearances are the same for a given engine regardless of the continent they are on. That is but one example!

We have CAFE in North America. The rest of the world does not. I think that is a big reason for the push to lighter and lighter oils, with only the ultra-high performance members of a given engine family getting spec'd for the heavier stuff because their low sales have an insignificant impact upon CAFE.

I would agree with this statement 100%

 

[Shannow]

Originally Posted By: BMWTurboDzl
Australia used to have unrestricted speed zones until 2007. IIRC some areas may still have them so you should come up with another example as to why it's only about CAFE in the US.


LOL, 110km/h has been the legal max for most of mainland Australia fur just about ever.

Maybe you need to come up with a better argument why a 1997 L67 buick specifies 20W-50 in 100km/hr tops Oz, and "allows" 15w40 in snow and freezing conditions.

Dunno what you think happened in 2007, but it wasn't restricted speed limits.

Mad Max was a movie, not a reality.

 

[91344George]

Originally Posted By: MrMeeks
I think the 5w-20 oil will provide cooler engine operation and better lubrication.However,I would not use store brand oil in a good car or truck .store brand oils are for lawnmower use only.


Sorry but this statement is hogwash.

As long as that store brand oil is API certified and has an SM, or SN rating it is just fine, it will do just as good a job at protecting the engine as the brand name...perhaps the change interval might be a bit sooner, but it is a small difference. Most any approved oil can easily go 5k miles between changes I would say 6k or 12 months, even with severe service.