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WiseScene422 7.7K Views
May 20, 2026 8:30 PM

Mobil 1 Full Synthetic Engine Oil 15W-50 1 Quart - YMMV $3

$3.00

$8.00

62% off
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Mobil 1 Full Synthetic Engine Oil 15W-50
Clearance
$3.00/quart - used to be regularly ~$8-9/quart

YMMV - only available in some AutoZone stores

https://www.autozone.com/p/mobil-...377/628512
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Mobil 1 Full Synthetic Engine Oil 15W-50
Clearance
$3.00/quart - used to be regularly ~$8-9/quart

YMMV - only available in some AutoZone stores

https://www.autozone.com/p/mobil-...377/628512

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13 Comments

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May 20, 2026 8:31 PM
5.3K Comments
Joined Jun 2010
wpcMay 20, 2026 8:31 PM
5.3K Comments
nobody in the world is paying $8-9 /qt for this stuff
1
Pro
May 20, 2026 8:51 PM
1.4K Comments
Joined Jun 2022
RelaxedPenguin2752
Pro
May 20, 2026 8:51 PM
1.4K Comments
Anyone know the zinc content on this?
May 20, 2026 9:23 PM
5.1K Comments
Joined Jan 2005
SonofZeusMay 20, 2026 9:23 PM
5.1K Comments
Q. What makes/models use 15w-50?
Original Poster
May 20, 2026 9:42 PM
418 Comments
Joined Oct 2020
WiseScene422
Original Poster
May 20, 2026 9:42 PM
418 Comments
Quote from RelaxedPenguin2752 View quoted comment :
Anyone know the zinc content on this?
Mobil1-Product-Guide-V2 [mobil.com]:
Nominal Zinc Level, PPM: 1320
Nominal Phosphorus Level, PPM: 1200
Pro
May 20, 2026 10:08 PM
1.4K Comments
Joined Jun 2022
RelaxedPenguin2752
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May 20, 2026 10:08 PM
1.4K Comments
Quote from SonofZeus View quoted comment :
Q. What makes/models use 15w-50?
Older classic vehicles use thicker oil , bearing clearances were not a tight as modern vehicles hydraulically lifters were not really a thing, flat tapped cams. Race car drivers also use thicker oil bc it moves slower and provides better coverage in the engine during high reving high heat. When I was a kid had no money a lot of my vehicles leaked/smoked, some oil thicker oil leaks slower burns slower. Lastly many even modern motorcycles still use thicker oil.
1
May 21, 2026 5:07 PM
119 Comments
Joined Apr 2015
JotterboxMay 21, 2026 5:07 PM
119 Comments
Quote from RelaxedPenguin2752 View quoted comment :
Anyone know the zinc content on this?
There's enough in there to give to your pokemon
1
Pro
May 21, 2026 5:23 PM
1.4K Comments
Joined Jun 2022
RelaxedPenguin2752
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May 21, 2026 5:23 PM
1.4K Comments
Quote from Jotterbox View quoted comment :
There's enough in there to give to your pokemon
Idk I never used a Pokémon . They came out way after my childhood. I own a classic car that requires higher zinc levels more than most modern engine oils .

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May 23, 2026 6:31 PM
95 Comments
Joined Oct 2022
EquilibriumSighMay 23, 2026 6:31 PM
95 Comments
Quote from wpc View quoted comment :
nobody in the world is paying $8-9 /qt for this stuff
I was at Walmart yesterday and saw these go for $8.50 or something like that for 0W-20.. Not sure about 15W-50.
Original Poster
May 23, 2026 6:49 PM
418 Comments
Joined Oct 2020
WiseScene422
Original Poster
May 23, 2026 6:49 PM
418 Comments
Quote from EquilibriumSigh View quoted comment :
I was at Walmart yesterday and saw these go for $8.50 or something like that for 0W-20.. Not sure about 15W-50.
They are $8.78/quart at https://www.walmart.com/ip/Mobil-...t/20713645
And $24.97/5 quart at https://www.walmart.com/ip/Mobil-...t/20713647 which is a good deal I normally use to purchase.
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May 24, 2026 5:54 AM
5.5K Comments
Joined Feb 2019
GimmeYoTotsMay 24, 2026 5:54 AM
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5.5K Comments
Quote from SonofZeus View quoted comment :
Q. What makes/models use 15w-50?
It works great in air cooled lawnmower engines. Not recommended for freezing temps... but you really aren't mowing your grass in the snow. I guess that would also mean... don't use it in your snowblower.
May 24, 2026 12:11 PM
122 Comments
Joined May 2019
TexasLonghornsMay 24, 2026 12:11 PM
122 Comments
I remember growing up all of the engines took at least 10w40 weight.
1
May 25, 2026 5:12 PM
531 Comments
Joined Jul 2018
NackJMay 25, 2026 5:12 PM
531 Comments
Quote from SonofZeus View quoted comment :
Q. What makes/models use 15w-50?
I use it on my dry clutch motorcycles
May 25, 2026 6:36 PM
63 Comments
Joined Nov 2018
BryanB6613May 25, 2026 6:36 PM
63 Comments
I have a friend that uses this and a little bit of liquid Molly MOS on his Porsche and it is excellent for preventing any bore scoring. The 50w is great because with enough heat is starts acting as a 40w when tracking it.

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