I know that that Jaguar recommends Castrol synthetic oil, & I have 2 Five quart jugs on the shelf.
But last oil change at the dealer, they used Pennzoil Platinum synthetic.
I've been using Mobil 1 synthetic for our family's 20+ cars over the past 20+ yrs with no issues.
With Walmart's sale of 5 qt jugs at $20 (now $22.88),
https://www.walmart.com/col/19-98-Cy...ype=10&veh=aff
I bought 4 for $80, did the online $12 rebate (x4 for $48 back) for my wife & kids' cars
https://apfco.com/secured/R10130W/

For future reference, after the 5 free/included oil changes from the dealer, I would assume I would able to use Mobil 1 instead of Castrol with no issues?
Anyone knows the max shelf life of synthetic oil?

Thanks,

 

As long as the container remains sealed, I can’t imagine that there would be a maximum shelf life.

 

Neither the pennzoil nor Mobil 1 carry the stjlr.51.5122 specification. I really don't understand why your dealer would use pennzoil. I'd be having a conversation with the service manager and JNA.

 

This also recently happened on the XJ forum and lots of debate ensued. Find the thread here:

https://www.jaguarforums.com/forum/x...il-car-214892/

 

Local dealer here in AZ also uses Pennzoil. I bought the correct spec JLM oil from them so they have it available, but still use Pennzoil when performing customer oil changes.

 

Jaguar engineers seem to place a lot of importance on high titanium content. That doesn’t seem to be a emphasis of the Pennzoil Platinum formulation.

 

do you have a theory as to why this is? Figured your the guy to ask.

 

As long as my car is under warranty not a drop of alternative oil is going in that engine. JLR will absolutely make you buy an engine if something goes wrong. At least in the OP's case he can hold it over the dealership, but they will try to cover their bottom line and make up a story for why they won't pay for it either.

 

Current best guess is to reduce negative effects of DI - chain wear and sludge on intake valves.

Also, I too was Mobil 1 fan until I noticed that my Subaru burned more oil when using Mobil 1. What was negligible oil burn otherwise ended up substantial when using Mobile 1 Fully Synthetic.

From Bob the Oil Guy:

 

Me thinks all these Titanium, Platinum, Gold, Silver, etc... are just marketing hype.
I'm sure that dealers wouldn't be using Pennzoil for our first 5 yrs free/included maintenance if it'll void the factory's 5 yr warranty.
Our previous Mercedes & BMWs has gone over 20 yrs without any engine issues on annual Mobil 1 synthetic changes, other issues (transmission, wear & tear, etc...) crops up first before the engine...

 

This isn't your 20 year old+ BMW, F-type has direct injection, variable timing controlled by oil pressure, runs thin oil that would ruin any 20+ year old engine... Disregarding oil spec recommendations out of misplaced oil brand loyalty is going to cost you (or next owner) dearly.

 

Thanks for the Bob quote. That explains it.

 

Jaguar dealer advised me awhile ago that the oil I use, Amsoil 0-30 is just fine and no warranty issues. They sell a lot of cars and have had bad engines go boom on occasion, using other than Castrol, and the oil was not an issue. Only point was to keep receipts to prove on time oil change, and/or have the dealer do them.
And yes, I know, its not 0-20, which is too thin for my liking so I go with 0-30 and have for over 10 years. Likely the 0-20 oil became popular due to gas mileage requirements.
My three jaguar v-8s all run great right up to red line.. etc...

Anyway lots of wear test info available that indicates Pennzoil is excellent as well, apparently full synthetic from 100% synthetic stock is considered top tear and if you believe the wear tests on the internet, Mobil may be a step down, but likely all good.
Gets down to personal preference and personal responsibility, while checking in with dealer just to make sure...

Lots of old threads on the 'oil debate' issue.
Lawrence