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Should I use 10w30? #4578210
11/18/17 07:04 PM
11/18/17 07:04 PM
Joined: Jul 2017
Posts: 187
Venezuela, South America
Emanuel Offline OP
Emanuel  Offline OP

Joined: Jul 2017
Posts: 187
Venezuela, South America
I have a 286k miles 01 Corolla, it has used 20w50 oil its entire life. Can I use a 10w30 oil after so many years of thick oil?

Re: Should I use 10w30? [Re: Emanuel] #4578213
11/18/17 07:12 PM
11/18/17 07:12 PM
Joined: Jun 2017
Posts: 727
DFW
JustN89 Offline
JustN89  Offline

Joined: Jun 2017
Posts: 727
DFW
Is there a reason you are wanting to use a 10W-30 over the 20W-50? If I remember right, you're car is burning a lot of oil as it is and I don't think any weight/viscosity/brand/etc will fix it.

Re: Should I use 10w30? [Re: Emanuel] #4578216
11/18/17 07:15 PM
11/18/17 07:15 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline

Joined: Jan 2007
Posts: 17,501
Clovis, CA
No. The engine is already stretched out from all those years of 20W-50.
If you go with 10W-30 now, you're not going to have any oil pressure.

Re: Should I use 10w30? [Re: Merkava_4] #4578228
11/18/17 07:23 PM
11/18/17 07:23 PM
Joined: Apr 2015
Posts: 320
Georgia
Charlie2015 Offline
Charlie2015  Offline

Joined: Apr 2015
Posts: 320
Georgia
Originally Posted By: Merkava_4
No. The engine is already stretched out from all those years of 20W-50.
If you go with 10W-30 now, you're not going to have any oil pressure.


Good point. I would recommend only Maxlife 20w50 at this point


1998 Honda Accord EX 2.3L Auto (Sold) 214k mi
2009 Scion tC Manual (Daily Driver) 165k mi
Re: Should I use 10w30? [Re: Emanuel] #4578237
11/18/17 07:31 PM
11/18/17 07:31 PM
Joined: Nov 2017
Posts: 5
Mississippi
SwampRabbit Offline
SwampRabbit  Offline

Joined: Nov 2017
Posts: 5
Mississippi
10W30 won't harm your engine at all. But, you might want to use a 10W40 before trying the 10W30.
I have built a few engines that I have switched from 20W50 to 5W30, 5W40, and sometimes just straight 30 weight. And, the oil pressure is always good no matter which oil wt. I use.

Re: Should I use 10w30? [Re: Emanuel] #4578240
11/18/17 07:34 PM
11/18/17 07:34 PM
Joined: Oct 2009
Posts: 4,007
Wet side WA
JohnnyJohnson Online content
JohnnyJohnson  Online Content

Joined: Oct 2009
Posts: 4,007
Wet side WA
LOL Emanuel you've been beating this to death for nearly a month now. I think its about ran out of mileage. Pull a new car under that oil fill cap!


2004 Corolla 129820
Out: EDGE EP 5W-30 Bosch 3311 7156 Miles
In: Havoline Pro DS 10w-30 Purolator PureOne 3-14-19 129693
2006 Duramax 74725
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 73705 4-22-18
Re: Should I use 10w30? [Re: JohnnyJohnson] #4578248
11/18/17 07:40 PM
11/18/17 07:40 PM
Joined: May 2013
Posts: 704
Florida
SilverSnake Offline
SilverSnake  Offline

Joined: May 2013
Posts: 704
Florida
Originally Posted By: JohnnyJohnson
LOL Emanuel you've been beating this to death for nearly a month now. I think its about ran out of mileage. Pull a new car under that oil fill cap!


Now this makes a lot of sense.


2016 Charger, 6.4L-485 HP (PUP 0W-40)
2017 BMW 330i, 2L-248 HP (BMW 0W-20)
2018 Jeep GC, 5.7L-360 HP (PUP 5W-20)
2008 20KW Generac (Amsoil 10W-30/30)
Re: Should I use 10w30? [Re: Emanuel] #4578255
11/18/17 07:49 PM
11/18/17 07:49 PM
Joined: Dec 2005
Posts: 10,895
Upper Midwest
kschachn Offline
kschachn  Offline

Joined: Dec 2005
Posts: 10,895
Upper Midwest
I don't know how the engine would know it had used 20W-50 before and would be somehow upset you changed the grade.


1994 BMW 530i, 241K
1996 Honda Accord, 267K
1999 Toyota Sienna, 409K
2000 Toyota ECHO, 280K
Re: Should I use 10w30? [Re: Emanuel] #4578259
11/18/17 07:54 PM
11/18/17 07:54 PM
Joined: Sep 2009
Posts: 16,473
OH
fdcg27 Offline
fdcg27  Offline

Joined: Sep 2009
Posts: 16,473
OH
Originally Posted By: Emanuel
I have a 286k miles 01 Corolla, it has used 20w50 oil its entire life. Can I use a 10w30 oil after so many years of thick oil?


You can use whatever grade you want but you might see higher consumption going down to a 10W-30.
If this little guy has done 286K on 20W-50, then why would you want to change now?
You've nearly doubled the design life of this car, so you must have been doing something right in your oil grade selection.


18 Accord Hybrid FF
17 Forester 18K VME 0W-20
12 Accord LX 96K SSO 0W-20
09 Forester 95K M1HM 10W-30
01 Focus ZX3 118K PP 5W-20
96 Accord LX 104K T5 10W-30
95 318i
Re: Should I use 10w30? [Re: Merkava_4] #4578260
11/18/17 07:55 PM
11/18/17 07:55 PM
Joined: Sep 2005
Posts: 6,161
MIchigan
Warstud Offline
Warstud  Offline

Joined: Sep 2005
Posts: 6,161
MIchigan
Originally Posted By: Merkava_4
If you go with 10W-30 now, you're not going to have any oil pressure.


And....The engine will blow up ?

Re: Should I use 10w30? [Re: Warstud] #4578278
11/18/17 08:16 PM
11/18/17 08:16 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline

Joined: Jan 2007
Posts: 17,501
Clovis, CA
Originally Posted By: Warstud
And....The engine will blow up ?


Do engines blow up when they run out of oil pressure ? I would think they come to a very quiet stop.

Re: Should I use 10w30? [Re: Emanuel] #4578293
11/18/17 08:38 PM
11/18/17 08:38 PM
Joined: Mar 2008
Posts: 6,377
Michigan
ZZman Offline
ZZman  Offline

Joined: Mar 2008
Posts: 6,377
Michigan
I never knew oil could stretch an engine out.


2003 Mercury Grand Marquis. PP HM 5w-30 and Fram TG
2008 Sebring Hardtop convertible. PP HM 5w-30 and Fram Ultra
2006 Kawasaki Vulcan 900 LT. Motul 7100 10w-40 and K&N
Re: Should I use 10w30? [Re: Merkava_4] #4578296
11/18/17 08:39 PM
11/18/17 08:39 PM
Joined: Nov 2017
Posts: 5
Mississippi
SwampRabbit Offline
SwampRabbit  Offline

Joined: Nov 2017
Posts: 5
Mississippi
Originally Posted By: Merkava_4
Originally Posted By: Warstud
And....The engine will blow up ?


Do engines blow up when they run out of oil pressure ? I would think they come to a very quiet stop.

I have seen Chevy engines run with 2 psi of oil pressure. These engines are candidates for a MELLING HV oil pump and KENDALL NITRO 70 wt. oil.

Re: Should I use 10w30? [Re: ZZman] #4578317
11/18/17 09:01 PM
11/18/17 09:01 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline

Joined: Jan 2007
Posts: 17,501
Clovis, CA
Originally Posted By: ZZman
I never knew oil could stretch an engine out.


Some fluids are incompressible; motor oil is one of them. If you go and force it through a clearance and the clearance puts up enough resistance because it's so tight, that clearance is going to get expanded because motor oil is a ruthless hombre.

Re: Should I use 10w30? [Re: ZZman] #4578338
11/18/17 09:26 PM
11/18/17 09:26 PM
Joined: Sep 2015
Posts: 2,559
Malaysia
zeng Offline
zeng  Offline

Joined: Sep 2015
Posts: 2,559
Malaysia
Originally Posted By: ZZman
I never knew oil could stretch an engine out.

On Bitog, it does. blush

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