I loves me a good oil thread.

the 4.2L = Engine oil, SAE 5W-30 meeting spec WSS-M2C-913B

Ford says this about that:
The Ford M2C913-B specification is released in Europe for initial fill engine oils used for lubrication of spark ignition engines using gasoline and for compression ignition engines using diesel fuels. The specification is also used to define engine oils for servicing Ford engines where applicable. The oil shall meet all the requirements of the ILSAC GF-2 and GF-3 specification, the ACEA A1-98 and B1-98 specification and additional Ford requirements.

ILSAC - GF5 is fully backward compatible with GF - 4, 3, 2 etc...

The 5.0 spec is WSS-M2C925-A is also ILSAC - GF5 compliant

Kirkland oil found in the links below meet ILSAC GF5

Krikland 5W30 Fully Synthetic oil can be found here:

https://www.costco.com/kirkland-sign...100527865.html

Kirkland 5W20 Fully Synthetic oil can be found here:

https://www.costco.com/Kirkland-Sign...100518854.html

and 0W20 here:

https://www.costco.com/Kirkland-Sign...100518855.html

10 quarts for $30 - So would you use it?

 

Yes for sure! Costco does not put their brand on junk products.

 

The only problem I see is that since there is zero information about what type of oil it is or even a clue to its longevity, you dont know how long the oil change interval should be.

The other problem is that its only $4 less than the Jaguar approved Pennzoil that meets the Jag spec for 4.2 and 5.0.

So it would be an expensive gamble.

 

The premises don't appear to have the same ambience as my Jaguar Dealership and from this example looks the kind of place where door dings come free.





Possibly an expensive gamble in more ways than one.

Graham

 

I'm going to stick with Castrol or Pennzoil Ultra Platinum. I moved away from Pennzoil Ultra Platinum when they switched to Natural Gas Base, but have since researched and will move back the next oil change. I've used both brands for years without issue.

And yes, the language is weak on the web page: "Protects against high-temperature shearing to maximize oil life even in long drain intervals (Always consult owner’s manual for recommended drain interval)." But I think the risk is low for our engines with any oil that meets ILSAC GF5 specs.

Is there even a recommended interval in our owners manual to change the oil? I don't see it in my online manual. Surely 10,000 miles should be fine using a full synthetic, but there are also driving conditions to consider. Daily drivers, hard riders and garage queens all should be changed more frequently with the latter being more dependent on seasons vs miles.

Also as I do my own oil changes. I avoid such dings dents and mechanics with gorilla hands. Saving 80 cents per quart (vs Castrol or Pennzoil on sale with rebate) isn't worth it to me.

 

If you change it frequently enough and don't do anything unusual with the car, any oil that meets the spec will be OK.

Would I race on such oil or take it to max service interval? Probably not.

Also, I can't make numbers work. Engine replacement is $10K on the low end. Over 10 years ownership, how frequently do you need to change oil for the savings to add up to the cost of an engine swap?

 

A similar thought comes to my mind whenever I read oil or coolant threads on all the model forums. Given how much I spend on fuel, the cost of other fluids is so insignificant as to make the search for cheaper equivalents or sources a waste of time and effort. I didn't buy a Jaguar as economical transport which is just as well as it has depreciated at over 100 UKP each week before it turns a wheel.

Graham

 

Even more revealing its often not about price.

I am convinced that study of psychology and rationale could use automotive fluid choices as a standardized test for broader things.

I dont mean false economy either, such as this oil if changed at 6 month interval, is actually twice as dear as the Jaguar recommended alternative when accounting for cost of filter. I mean paying more for an untested claim.

 

Sean the Ultra Platinum results in 35% less sludge than their own superb oil one level down.
You can do all kinds of reverse math just based on that finding.

Sludge is the only thing that keeps me up in any engine, from a performance perspective.

 

Psychology did study it. To summarize: people create 'buckets' of needs and operate on % of 'volume' and not based on absolute values. So if your oil change total budget is $200 a year, saving $20 is illogically seen as a big deal and a worthwhile risk.

 

You do know that there is some sludge in your engine forming right now, as we speak?

Sweet dreams.

:P

 

In my pedestrian observation....
There seems to be some need to believe in big conspiracy, even when all other criteria of savings and such are met.
The Ftype forum is a great example, I regularly see someone discovering Mobil1 as the better choice for their new car, despite Mobil themselves advising against it.

 

I'm surprised that Madison Avenue hasn't already followed your sage advice and used images of beautiful women on the labels of motor oil containers. As you said, there is no better way to be "Even more revealing ... for broader things." Sex sells.


You are responsible for what you wrote. I am responsible for what I understand.

P.S. Corrected typo created by Automatic Spelling Correction. Sage, not stage, advice.

 

 

NO!!!
With regard to Sams Club or Costco, my experiences with both of them, wether it was electronics, clothing, or even food, has been unsatisfactory.
Why then would I trust my most prized possession to their Oil ??

 

I guess you never had Costco's all-beef, foot-long hot dog and a Pepsi for $1.50 with free refills.

Millions of Costco members disagree with you. As do their stockholders.

 

Something is off.
My sister in law is in charge of the Costco account for a Fortune 5 company.
She says that no one is as strict on them as Costco. Many things they do at other retailers they cant do at Costco.
They do their own testing and demand 2x of whatever the other guy is getting. So if a laptop comes with 1 year warranty everywhere, at Costco it better be 2 years.

I learnt this lesson recently. I have to throw away my dream refrigerator and we never used it!! shame.
Bought it so that we could plan the kitchen we are building, had it plugged in but empty for a year. Needs a new compressor for a $1000.
Call Lowes they say I had a 1 year warranty (it took them 2 months to deliver)
See the same model at Costco, 2 year warranty and 10 years on the compressor.
Never again.

 

Judge for yourself.

https://www.lowes.com/pd/LG-SmartThi...TAR/1000284875

https://www.costco.com/lg-26cuft-sid...100405728.html

 

Yikes did this thread go off kilter

 

You've only got yourself to blame for that.

Graham