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FREEDGUY 
Orange Level Access
Joined: 15 Apr 2017
Location: South West Mich
Points: 5396
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 Topic: Oil Viscosity??
Posted: 14 Sep 2021 at 7:33pm |
The vehicle that I run calls for 5W20 oil, my wifes 5 year old 'newer' buggy calls for 5W30 oil. I would like to consolidate oils but am unsure which viscosity to stock up on  Thanks
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bemer848
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Joined: 29 Sep 2013
Location: southern IL
Points: 93
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Posted: 14 Sep 2021 at 8:01pm |
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Have you ever heard of google? Oh I forgot you are trying to get to the 4000 post mark.
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steve(ill)
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Joined: 11 Sep 2009
Location: illinois
Points: 87452
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Posted: 14 Sep 2021 at 8:08pm |
18 post to go !! Your almost an ADULT !!! 
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Like them all, but love the "B"s.
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Lars(wi)
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Joined: 14 Sep 2009
Location: Permian Basin
Points: 8017
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Posted: 14 Sep 2021 at 9:36pm |
 FREEDGUY wrote:
The vehicle that I run calls for 5W20 oil, my wifes 5 year old 'newer' buggy calls for 5W30 oil. I would like to consolidate oils but am unsure which viscosity to stock up on Thanks |
Consult the owners manual of both vehicles, most give different ‘preferences’ of weights of motor oil. If both have a common grade in that list, go with that one.
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I tried to follow the science, but it was not there. I then followed the money, and that’s where I found the science.
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steve(ill)
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Location: illinois
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Posted: 14 Sep 2021 at 9:51pm |
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manufacturers changed to 5W20 , a thinner oil, to help gas mileage. Most of those motors were originally 5W30 type....... If a newer auto requires 5W30, its normally because it works harder ( like a turbocharger) and needs a thicker oil for extra heat.
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Like them all, but love the "B"s.
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jaybmiller
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Joined: 12 Sep 2009
Location: Greensville,Ont
Points: 24617
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Posted: 15 Sep 2021 at 5:47am |
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then there's the 'winter-summer' thing. you need different oil based upon the temperature..coruse with CC warming up the world, you won't need a 'winter grade' oil anymore.....
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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)
Never burn your bridges, unless you can walk on water
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Tbone95
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Joined: 31 Aug 2012
Location: Michigan
Points: 12145
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Posted: 15 Sep 2021 at 7:03am |
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Hunch only, but your vehicle is older, has some wear and some clearance, 5W30 would be just fine for yours. And still 5W for easy flow at start up. Do as you will.
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Lars(wi)
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Joined: 14 Sep 2009
Location: Permian Basin
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Posted: 15 Sep 2021 at 7:30am |
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I have a 2004 Ford Taurus, it calls for 5w-20, most of its life I used 5w-30 full synthetic. Tried 5w-20 a couple different times, but oil consumption always increased. So whatever mpg gain there may have been, was canceled out by the increased oil usage.
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I tried to follow the science, but it was not there. I then followed the money, and that’s where I found the science.
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FREEDGUY
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Joined: 15 Apr 2017
Location: South West Mich
Points: 5396
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Posted: 15 Sep 2021 at 7:34pm |
Tbone95 wrote:
Hunch only, but your vehicle is older, has some wear and some clearance, 5W30 would be just fine for yours. And still 5W for easy flow at start up. Do as you will. |
Thanks . My 5.4 is pushing 195,000 miles, the wifes buggy is 128,000 . Her Nissan Rogue is not T/C though in response to another poster  . Thanks guys
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FREEDGUY
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Joined: 15 Apr 2017
Location: South West Mich
Points: 5396
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Posted: 15 Sep 2021 at 7:36pm |
jaybmiller wrote:
then there's the 'winter-summer' thing. you need different oil based upon the temperature..coruse with CC warming up the world, you won't need a 'winter grade' oil anymore.....
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I haven't changed viscosity between "summer/winter" since 1998  !!!
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Clay
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Joined: 11 Sep 2009
Location: Udall, Kansas
Points: 9842
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Posted: 15 Sep 2021 at 8:00pm |
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Over 350,000 miles on my 1999 Toyota 3.0 V-6 Camry. 1 quart in 5,000 miles. Using Castrol 5w-30 GTX motor oil. Never had to open remove the pan or heads. Runs strong as a new one.
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Brian Jasper co. Ia
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Joined: 11 Sep 2009
Location: Prairie City Ia
Points: 10508
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Posted: 16 Sep 2021 at 12:31am |
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Stock up on both. It’s not a good idea to use other than what the manufacturer recommended.
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"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford
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Tbone95
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Joined: 31 Aug 2012
Location: Michigan
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Posted: 16 Sep 2021 at 6:29am |
Ya, me neither. There's usually a recommendation that covers a very large range of operating temperatures on anything I've owned for the last few decades.
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JC-WI
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Joined: 11 Sep 2009
Location: wisconsin
Points: 34298
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Posted: 16 Sep 2021 at 9:11am |
Some vehicles today require full synthetic, but with 195,000, maybe you better not switch., just stock up on both oils. and just label them 'HIS' and 'HERS' just so you know which is which.
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He who says there is no evil has already deceived himself
The truth is the truth, sugar coated or not. Trawler II says, "Remember that."
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