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From 5w30 to 5w20 tp 0w20? #5398291 04/09/20 10:35 AM
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Bullet Offline OP
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Originally my 2006 Tacoma was spec'd for 5w30 than back spec'd for 5w20. Anything wrong using a 0w20 oil?

Mileage is 108k on the clock and I've been using 5w30 since new. It burns no oil.

Would it be possible to pick up a 1/2 MPG using a 0w20? I'm just thinking if I get a 1/2 MPG using a 0w20 it would just about save enough in fuel to pay for the oil change. Is this crazy?

Re: From 5w30 to 5w20 tp 0w20? [Re: Bullet] #5398294 04/09/20 10:41 AM
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Bailes1992 Offline
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0w20 would be perfectly fine in your application. You won't see any fuel economy savings as it's still a 20 weight oil at operating temperature.


19 Volvo V40 D3 - 19 Jeep Renegade eTorq - 03 Ford Mondeo 3.0 V6 - 96 LR Defender 90 300TDi
Castrol Edge 5w30 LL
Valvoline Maxlife ATF
Fuchs Sintofluid 75w80
Fuchs Sintopoid 75w90
Re: From 5w30 to 5w20 tp 0w20? [Re: Bailes1992] #5398298 04/09/20 10:45 AM
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kschachn Offline
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And at any temperature besides an extremely cold one the 0W-20 may be thicker than a 5W-20.

If you’re careful to read fuel economy improvements that are out there it’s always against a much higher grade in order to accentuate the benefit.


1994 BMW 530i, 252K
1996 Honda Accord, 288K
1999 Toyota Sienna, 434K
2000 Toyota ECHO, 284K
Re: From 5w30 to 5w20 tp 0w20? [Re: Bullet] #5398304 04/09/20 10:54 AM
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simple_gifts Offline
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The snarky response is if you are concerned about fuel economy, driving habits and tire pressure (and not having a tacoma) are the best places to start.

I would just stay with 5W-30 in LA.

I use 5W-20 in my prius (is a 5W-30 car) but around town the engine rarely gets up to temp.


2004 Prius; 131K; ATM
2007 Yaris 108K ATM
2006 B2300;137K;ALM
Re: From 5w30 to 5w20 tp 0w20? [Re: Bullet] #5398320 04/09/20 11:06 AM
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Cujet Offline
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Despite many claims to the contrary, sufficient oil viscosity is required for proper lubrication. The rash of timing chain wear related issues is directly correlated with low viscosity oils. Chains last longest with a 30 viscosity oil. The rash of Toyota sticking piston rings is directly attributable to low quality oils. The good news is that Toyota engines are amazingly reliable. The joke is that they will operate perfectly with half the spark plugs missing, wesson vegetable oil in the sump and no coolant what so ever.

My suggestion remains always the same, choose a quality synthetic oil of sufficient viscosity for your location, change it regularly and enjoy many years of trouble free operation. No sticking piston rings, no worn timing chains, etc. The oil change is the only way many of those wear causing contaminates are removed from the engine.

Furthermore, the HTHS (viscosity at 150c) (a good indicator of an oils performance under high temperatures) of a 0W-20 is often lower (at 2.5) than the 5W-20 (at 2.7) Whereas 5W-30 HTHS is always over 3.0

Last edited by Cujet; 04/09/20 11:21 AM.

People who count on their fingers should maintain a discreet silence.
Re: From 5w30 to 5w20 tp 0w20? [Re: Bullet] #5398328 04/09/20 11:10 AM
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Jimzz Offline
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Id stick with 5w30. You live in a warmer state so no real reason to switch. And no you would not see any difference in gas mileage.
Just use a good 5w30 synthetic or semi-syn HM oil and it will not have any oil issues.


yup
Re: From 5w30 to 5w20 tp 0w20? [Re: Bullet] #5398421 04/09/20 12:41 PM
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JeffKeryk Offline
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I ran 5w20 on our 2006 TSX for awhile, based on the Acura dealer service's recommendation.
Other K24s of that year were Honda spec'ed for 5w20, I believe.

I went back to M1 5w30 High Mileage. I would do the same in your Toyota.


2018 Tesla Model 3, Medium Range Battery
2018 Lexus RX450h
2013 Lexus GS350 F Sport
2006 Acura TSX
2001 Tundra Access Cab, 1998 Accord LX, 1968 Corvette L36 Roadster, 1965 Olds 4-4-2
Re: From 5w30 to 5w20 tp 0w20? [Re: Bullet] #5398423 04/09/20 12:44 PM
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Triple_Se7en Online Content
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Originally Posted by Bullet
Originally my 2006 Tacoma was spec'd for 5w30 than back spec'd for 5w20. Anything wrong using a 0w20 oil?

Mileage is 108k on the clock and I've been using 5w30 since new. It burns no oil.


Look at my Signature and notice my Colorado now has 0w20 and was run 5w30 for 130k.
So far - So Quiet. But this a test and only a test. It will also only be a one-time thing, for I got the 0w20 oil for free. My next test OCI will be Euro 0w40.
Am I expecting more oil consumption and a slight MPG gain?....... yes I am - on both counts.

Last edited by Triple_Se7en; 04/09/20 12:58 PM.

2019 Hyundai Santa Fe 2.4 GDI - Pennzoil Ultra Platinum 5w30 / OEM 35504 Filter
2020 Kia Soul X-Line 2.0 MPI - a 50-50 blend of Pennzoil Platinum HM & Pennzoil Gold 5w30 // AC Delco PF1127 Ecore




Re: From 5w30 to 5w20 tp 0w20? [Re: Bullet] #5398424 04/09/20 12:48 PM
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racin4ds Offline
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Waste of time and effort to even think you'll see a MPG improvement. Both are 20WT oils when at operating temp. You definitely don't need a 0W anything living in LA.


Just say NO to thin oils and M1!
05 F350 Powerstroke
05 Hyundai Tucson
'13 Passat TDi SE+Nav
Re: From 5w30 to 5w20 tp 0w20? [Re: Bullet] #5398434 04/09/20 01:02 PM
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IMSA_Racing_Fan Offline
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Going with a thinner oul on a worn engine to save 1 mpg is absolutely logical.


2012 Cadillac CTS 3.0
1997 Ford Aspire
1991 Jaguar XJ6
1986 Kawasaki ZG1000 Concours
Re: From 5w30 to 5w20 tp 0w20? [Re: Bullet] #5398492 04/09/20 02:04 PM
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Why would you want to vary from 5W-30?


2015 F150 2.7
2018 F350 6.2
Re: From 5w30 to 5w20 tp 0w20? [Re: simple_gifts] #5398674 04/09/20 05:44 PM
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IMSA_Racing_Fan Offline
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Quote
and not having a tacoma

Well played.


2012 Cadillac CTS 3.0
1997 Ford Aspire
1991 Jaguar XJ6
1986 Kawasaki ZG1000 Concours
Re: From 5w30 to 5w20 tp 0w20? [Re: Bullet] #5398698 04/09/20 06:30 PM
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Bryanccfshr Offline
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Originally Posted by Bullet
Originally my 2006 Tacoma was spec'd for 5w30 than back spec'd for 5w20. Anything wrong using a 0w20 oil?

Mileage is 108k on the clock and I've been using 5w30 since new. It burns no oil.

Would it be possible to pick up a 1/2 MPG using a 0w20? I'm just thinking if I get a 1/2 MPG using a 0w20 it would just about save enough in fuel to pay for the oil change. Is this crazy?


You would be better off managing your tire pressure, than relying on oil to save you gas. A single trip with 20 miles of headwinds will wipe out any benefit of the lower viscosity.

Last edited by Bryanccfshr; 04/09/20 06:31 PM.

2018 Trd Pro 4Runner
2018 Tacoma off-road

Dealer 0w20 to M1 0w40 FS -it depends
Re: From 5w30 to 5w20 tp 0w20? [Re: Bullet] #5398894 04/09/20 11:03 PM
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xtell Offline
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My gas mileage has improved going from 5w-30 to 0w-20 in my 2001 Cavalier.

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