frontpage Posted by Sleevee • Apr 10, 2025
Apr 10, 2025 2:29 PM
Item 1 of 4
Item 1 of 4
frontpage Posted by Sleevee • Apr 10, 2025
Apr 10, 2025 2:29 PM
5-Qt Mobil 1 Advanced Full Synthetic Motor Oil (Various)
+ Free Store Pickup$25
$28
10% offWalmart
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However, in high mileage vehicles, a sudden change to high mileage oil could overload the engine and cause more harm than good if not done gradually.
Additionally, some users report that high mileage oil can soften seals over time, potentially leading to leaks and other issues."
my understanding is that high mileage oil contains an additive that makes the rubber components swell which results in fewer leaks. An engine that does not leak does not need this. But it is not harmful and effects will disappear if switched to regular oil.
However, in high mileage vehicles, a sudden change to high mileage oil could overload the engine and cause more harm than good if not done gradually.
Additionally, some users report that high mileage oil can soften seals over time, potentially leading to leaks and other issues."
my understanding is that high mileage oil contains an additive that makes the rubber components swell which results in fewer leaks. An engine that does not leak does not need this. But it is not harmful and effects will disappear if switched to regular oil.
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Yes, it does go "bad" eventually. But like so many things: it depends.
https://bobistheoilguy.com/forums/threads/does-oil-go-bad-after-time.379209/ [bobistheoilguy.com]
Great video from Lake Speed ("The Motor Oil Geek") in the first post on that thread. He tests oils of various ages, shaken and unshaken (as additives and other components can fall out of suspension).
"This question has come up several times that I can recall. Mobil, I believe, has said that oil more than five years old should not be used. Some folks here believe otherwise, and that older oil is fine, and have used old oil."
From another comment on that thread:
TL;DR - yes it goes bad. The 5 year mark is typically taken from the FAA shelf life for aircraft lubricants. Most of it depends a lot on storage conditions. Yes, certain things like greases will go bad first.
We've found oil over 60 years old in our warehouse. No; it was not good. Additives separated out.
Oil will last a long time. The performance degradation isn't linear either.
Newer oils with solubility issues (like the ULV transmission products) will have a much shorter shelf life than older more "conventional" products.
ESP 0/5W-20, 0/5W-30, and their 0W-40 meet Porsche C20, C30, and A40 respectively. I don't drive a Porsche, but I put ESP in a 2011 GS 350 with a 2GR-FSE. At ~125,000 miles I have zero oil consumption (acquired it with 47,749 miles).
5Qt Mobil 1 ESP 0W-30 $28 - $4 "Walmart Cash" --> $24.
https://www.walmart.com/ip/Mobil-...1756386056
The 1Qt gets -$1.50 "Walmart Cash".
How do we redeem the cash back if not a W+ member?
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ESP 0/5W-20, 0/5W-30, and their 0W-40 meet Porsche C20, C30, and A40 respectively. I don't drive a Porsche, but I put ESP in a 2011 GS 350 with a 2GR-FSE. At ~125,000 miles I have zero oil consumption (acquired it with 47,749 miles).
5Qt Mobil 1 ESP 0W-30 $28 - $4 "Walmart Cash" --> $24.
https://www.walmart.com/ip/Mobil-...1756386056 [walmart.com]
The 1Qt gets -$1.50 "Walmart Cash".
I've been trying to keep it a secret, but if someone is bringing this to light, then let it burn!
Every time there's an oil promotion, they exclude the ESP oil because it's literally more expensive and of higher quality.
I don't know if there's a maximum limit for getting Walmart Cash on a single product, but if there is, and if you want to stock up on as much ESP oil as you can, you can also buy the 5W30, it's the same price. Use the 5W30 in summer and save the 0W30 for winter!
I've been trying to keep it a secret, but if someone is bringing this to light, then let it burn!
Every time there's an oil promotion, they exclude the ESP oil because it's literally more expensive and of higher quality.
I don't know if there's a maximum limit for getting Walmart Cash on a single product, but if there is, and if you want to stock up on as much ESP oil as you can, you can also buy the 5W30, it's the same price. Use the 5W30 in summer and save the 0W30 for winter!
Yeah it was the first thing I checked. And of course the ESP isn't included in the promo, because like you said they tend to exclude it. I still buy it anyway because even the regular price is only $28/5Qt. They just so happen to have $1.50 and $4.00 "Walmart cash" for the 1Qt and 5Qt respectively right now, so it's an even better deal than the other stuff which is "on sale". Kind of funny. I'm going to load up on at least one oil change. I used to pile up 15-20Qts, but came around to finding that a bit absurd. If it was HALF PRICE then OK sure. But for a few $$? I'd rather have less clutter in the f*ckin' garage.
If you're interested (or curious), Castrol 5W-30 C3 can be had for a decent price on Amazon sometimes (I use Camel³ to track the price and get alerted). Last time I ordered it, I bought 2x5Qt for $61.90 (November 2023). Doesn't meet Porsche C30, but it's Dexos Gen 2 and meets MB 229.31/ 229.51 and VW 505 00/ 505 01. Currently "unavailable".
Amazon does currently have Castrol Edge Euro 5W-30 K. Meets Porsche C30! But right now (at least Shipped & Sold by Amazon), it's either $55 for 6x1qt or $82 for 3x5Qt ($27.33/5Qt is NOT bad). That's basically 2x oil changes in my case, plus a spare quart.
I also bought some Valvoline "European Vehicle" XL-III 5W-30 in May of last year. $53.90 all-in for 2x5Qt. I really need to use that NEXT, since it's almost a year old. Meets Porsche C30 and a number of MB, VW, and BMW specs. Also generally considered to be a really good oil!
Great video from Lake Speed ("The Motor Oil Geek") in the first post on that thread. He tests oils of various ages, shaken and unshaken (as additives and other components can fall out of suspension).[/I]
Here is that link: Oil Problem? When You Shouldn't Use MOBIL1 0W-40!
[youtu.be]
He also has a good one on: EXPIRED: When Does New Oil Go Bad? [youtu.be]
LAB RESULTS: Pennzoil Ultra Platinum vs Mobil 1's NEW Formula [youtu.be]
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