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Mixing Mobil 1 0w20 with 5w30 #4109474 05/29/16 06:49 AM
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doublebase Offline OP
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My car is starting to use a little bit of oil between changes and my owner's manual says I can use either 0w20, 5w20 or 5w30 (in extreme situations). Well I decided I'd try to "thicken" the oil up a bit and mix the 0w20 with the 5w30 to see if it would reduce some consumption. Any problems with doing that? I figured it would just turn into a heavier 20 weight oil. Both are Mobil 1 synthetic...same bottle, etc...so I assume it's the same additive package.

The way my car uses oil is kind of strange; it starts out fine, no usage for the first 3,500 miles - after 3,500 I might add a half a quart till 4,500, but once it reaches 5,000 miles?? It drinks it to 7,500. I end up adding maybe a quart and a half/2 quarts between 5000-7500. My thoughts were that the lighter weight is shearing? And maybe going a little thicker will help. Like I said, the first 3,500 I won't lose a drop. And the car has no visible oil leaks. I suppose I could just cut the OCI's down to 5,000 miles, but with people going 10,000 miles and up, I figure 7,500 is pretty reasonable on a synthetic.

Re: Mixing Mobil 1 0w20 with 5w30 [Re: doublebase] #4109494 05/29/16 07:30 AM
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4WD Offline
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Have done that - not for the same reason - just that the thinner oils wind up on sale sometimes -
I do stick with all Mobil-1 or all PP if doing so ...

Re: Mixing Mobil 1 0w20 with 5w30 [Re: doublebase] #4109496 05/29/16 07:35 AM
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SlipperyPete Offline
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I'm sure mixing the two Mobil products won't hurt anything. I'd try using just 5/30 or change at 5K with a conventional. It might be worthwhile to try a high mileage oil as well.

Re: Mixing Mobil 1 0w20 with 5w30 [Re: doublebase] #4109524 05/29/16 08:09 AM
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pbm Offline
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I don't think you'd have any problem at all mixing those 2 M1 products but as SP said, I'd probably use conventional 5w20 or 5w30 for 5K and call it good. I can't see using syn. in a car that uses oil....


'Journalism is Dead'
Re: Mixing Mobil 1 0w20 with 5w30 [Re: doublebase] #4109533 05/29/16 08:14 AM
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Eddie Offline
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I do it regularly. I mix PP 5w30 with PP 0w20.


2014 CX5 Touring 2.5L :-)
Re: Mixing Mobil 1 0w20 with 5w30 [Re: 4WD] #4109551 05/29/16 08:39 AM
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JC1 Offline
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It will be ok. What vehicle is this? As mentioned try a high mileage oil next OCI.


2015 Grand Caravan SXT Plus 5w-30 Valvoline White Bottle/Fram Ultra Filter
1997 Honda Civic CX 5w-30 Shell Conventional/Fram Ultra Filter
Re: Mixing Mobil 1 0w20 with 5w30 [Re: doublebase] #4109630 05/29/16 09:50 AM
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What vehicle? Maybe an 0w-30 is in your future.


2013 Honda Accord LX, 61K, 2nd owner
2007 Honda Ridgeline RTS, 91K, 1st owner
2007 Infiniti M35, 113K, 1st owner
Re: Mixing Mobil 1 0w20 with 5w30 [Re: pbm] #4109677 05/29/16 10:45 AM
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doublebase Offline OP
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Originally Posted By: pbm
I don't think you'd have any problem at all mixing those 2 M1 products but as SP said, I'd probably use conventional 5w20 or 5w30 for 5K and call it good. I can't see using syn. in a car that uses oil....


It's a Lexus LS460. Oil change intervals are recommended at 5k, unless you use a synthetic, then it's 10k. It takes 9.1 quarts.

Re: Mixing Mobil 1 0w20 with 5w30 [Re: NormanBuntz] #4109679 05/29/16 10:46 AM
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doublebase Offline OP
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Originally Posted By: NormanBuntz
What vehicle? Maybe an 0w-30 is in your future.


It's a LS460. I did buy a five quart jug of the 0w30 to mix with the 0w20 (I bought 6 jugs because of the Mobil 1 rebate going on).

Re: Mixing Mobil 1 0w20 with 5w30 [Re: pbm] #4109682 05/29/16 10:49 AM
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doublebase Offline OP
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Originally Posted By: pbm
I don't think you'd have any problem at all mixing those 2 M1 products but as SP said, I'd probably use conventional 5w20 or 5w30 for 5K and call it good. I can't see using syn. in a car that uses oil....


I might consider that when I run out of all the Mobil synthetic I bought on sale (plus the rebate). That might be a good idea if I'm going to cut the OCI's down to 5k.

Re: Mixing Mobil 1 0w20 with 5w30 [Re: doublebase] #4109807 05/29/16 02:22 PM
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demarpaint Offline
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Call Mobil and ask them what they think of the mix. hide


God Bless Our Troops

Re: Mixing Mobil 1 0w20 with 5w30 [Re: doublebase] #4109969 05/29/16 07:02 PM
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Gene K Offline
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Fill with your 0W20. After all its thick enough for the first 3500 miles.

Use 5W30 if that's what you have for add oil.

0W40 would be a good add oil if you have to buy more in the future. After all you are trying to thicken it back up.


Gene

2014 Mustang GT 5.0 SC - 675 bhp
ST Synthetic 10W30 / FL500S

2018 F150 4x4 3.5 EB
OEM Oil & Filter

2018 Lincoln MKX 3.7
OEM Oil & Filter





Re: Mixing Mobil 1 0w20 with 5w30 [Re: Gene K] #4110074 05/29/16 09:41 PM
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doublebase Offline OP
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Originally Posted By: Gene K
Fill with your 0W20. After all its thick enough for the first 3500 miles.

Use 5W30 if that's what you have for add oil.

0W40 would be a good add oil if you have to buy more in the future. After all you are trying to thicken it back up.


Good idea. Any idea why my car doesn't burn a drop during the first 3,500-4,000 miles and then uses 2 quarts after?

Re: Mixing Mobil 1 0w20 with 5w30 [Re: doublebase] #4110249 05/30/16 06:34 AM
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virginoil Offline
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Originally Posted By: doublebase
My car is starting to use a little bit of oil between changes and my owner's manual says I can use either 0w20, 5w20 or 5w30 (in extreme situations). Well I decided I'd try to "thicken" the oil up a bit and mix the 0w20 with the 5w30 to see if it would reduce some consumption. Any problems with doing that? I figured it would just turn into a heavier 20 weight oil. Both are Mobil 1 synthetic...same bottle, etc...so I assume it's the same additive package.

The way my car uses oil is kind of strange; it starts out fine, no usage for the first 3,500 miles - after 3,500 I might add a half a quart till 4,500, but once it reaches 5,000 miles?? It drinks it to 7,500. I end up adding maybe a quart and a half/2 quarts between 5000-7500. My thoughts were that the lighter weight is shearing? And maybe going a little thicker will help. Like I said, the first 3,500 I won't lose a drop. And the car has no visible oil leaks. I suppose I could just cut the OCI's down to 5,000 miles, but with people going 10,000 miles and up, I figure 7,500 is pretty reasonable on a synthetic.


Easy fix just change your oil at 5000 miles with the correct grade.

Well done you asked and answered your own question.
Oil is cheap and it is recycled.

Use your spare time to meditate on more important things.

Last edited by virginoil; 05/30/16 06:43 AM.


Arrivederci e buona sera
Re: Mixing Mobil 1 0w20 with 5w30 [Re: doublebase] #4110305 05/30/16 07:58 AM
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I'm sure mixing 2 variations of Mobil 1 won't hurt at all & you're probably correct about it just creating a heavier 20 weight oil, perhaps a "5W-25"? grin

After you use up the 20 weight oil, I suggest you just switch to a 5W-30 full time.

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