Hi everyone, I have just purchased a 2020 pre-facelift F type R V8 with 6000 miles. I am just having the O2 sensor replaced as it threw a code on my OBD2. It is being replaced by San Diego Jaguar dealership as this is my swan song convertible into retirement and it is going to get babied. I did a search in the forums about fuel and got totally confused by the different suggestions and comments. With that in mind to keep the specificity of the discussion to my vehicle and my location. Is there anyone in California with a jag V8 550hp that can advise on the following.

1: Is it OK to use the 91 oct at a Costco or should I use Shell's best brand?
2: With the low mileage I have and the O2 sensor just going bad, is it advisable to use any specific fuel or fuel additive at this point in the vehicles life and mileage?
3: Is there anything glaringly obvious I should do such as Transmission fluid and diff fluids change at this time?

I did read some other threads but some get buried in the weeds with unrelated information not relevant to the V8 and California.

Thanks

David

 

The ZF gearbox should be serviced every 60,000 km and the correct fluid used.

I personally use the Chevron premium. I have no experience with the Costco brand.

The oxygen sensors are a known issue with the AJ133/AJ126.

 

Thanks NBCat. To clarify as the mileage is so low, what would be your thoughts on when would be a good age / mileage to change the Transmission fluid. Should I wait for 60k miles as that does seem an age away as I don't plan on doing more that 10k miles a year. I dig because I read your Bio.

 

Don’t worry about Oxygen sensor longevity. A) They are under warranty, basically, for ever. Don’t let the dealership charge you for it. B) No telling why exactly they go bad but for sure do not use crap gas. I’ve had two sensors go out and I’m at 92,000 miles. More importantly, it’s a DI engine and although it’s not as bad as a VW/Audi engines at carbon-ing up, you don’t want to tempt the injector gods with crap gas fouling them up. If you won’t be driving it every week you might think about using Marine Stabil for the ethanol in the gas. And get yourself a battery maintainer. JLR’s are not happy with batteries that sit for weeks.

I use Exxon/Mobile premium. Purchase with Mobile App using Apple Card. 3% back from Apple Cash plus rewards for Mobile Premium. Costco is Top Tier gas. Sam’s is not.

 

This. That's a warranty replacement so hopefully you're not being charged for it.

 

This copy of the O2 sensor warranty says it’s only up until MY2017…
https://www.dropbox.com/scl/fi/z4k4i...=wyehxu3x&dl=0

 

I use Chevron premium too, and also do not know about Costco. I expect that Costco gets what they can get, but that the quality is on par. I use the Chevron for a couple of reasons: convenience and additives package. I've certainly had no issues that could be attributed to fuel. I do not recommend any extra additives.

I did have the O2 sensor calibration update and also at least one replacement of a sensor under warranty. As noted, it's a known issue and covered.

 

Costco (AKA Kirkland Signature) is Top Tier, detergent-laden fuel. That is all we use (unless traveling).

https://www.toptiergas.com/

And Costco gets you 5% back with their credit card.
Discover Card pays 5% back during some times of the year (changes quarterly every 3 months). Last year it was April - June.


Regards warranty, emission equipment (O2 sensors, cat/cons) should be covered for a 2020 car in California:


+++++++++++

Gasoline is fungible,meaning it is all the same/interchangeable. BUT different brands add different additives at delivery.
Our Costco is so popular, they refill the tanks 2X a day, so there is never an issue with moisture in the tanks, contaminating the fuel.

If you want additives, buy the name brands, they are likely to contain a good amount of detergents. (They are not always listed as Top Tier though, because they don't want to pay for certification. I cried when GasBuddy stopped noting which fuels were Top Tier several years ago.)

 

The gearbox should be serviced every 60 000 km or five years, whichever comes first. The filter is integrated into the pan/sump, and is changed by replacing the pan during service. If you go to most Jaguar main dealers, they most likely will say the fluid is a 'lifetime' fluid that doesn't require changing. That's simply not true.

 

There is a strong sentiment in the motorsports community that Chevon's Techron is the best additive package. I've also had race engine tuners tell me to avoid Shell. I live in San Diego and go out of my way to buy Chevron for all my street cars and have never had a fuel system problem in decades.

Regarding additional additives, per Grassroots Motorsports (great mag for gear heads) "Detergents like PEA polyether-amine and PIBA polyisobutylene-amine are better than solvent based ones". I use BG44k every 6 months.

 

I always buy premium fuel and also use BG 44K once a year (every 7K miles).

 

What's wrong with Shell?

 

I use Costco gas exclusively in my 2020 F-Type. I'd buy elsewhere if higher octane were available but 91 is the max here in California. Costco gas is Top Tier-rated so it has the proper detergent additives, and it's fresh because Costco sells so much, so there's no need to worry about oxidation or the development of particulates.

 

Orange County/LA County here! I've ran Costco in for years in my F-TYPE, NSX, Civic Type R with no issues. Costco is considered top tier. Costco also get their gas from the same refineries as the big name brands but just add their own additives.

 

I know nothing about US gas but over here Shell V-Power is one of the best brands. One thing for sure is that these cars should be fed with as good and as high octane gas as possible. I personally think that many of the sometimes really bad injector issues with F-Types are caused by crap gas and owner neglect. Something like BG44K seems like a good idea. The Jag dealer that services my car pours a can of injector cleaner in the tank with every annual service.

 

Costco gas for about 7 years now, unless I'm on a roadtrip, then it's whatever.

Twice a year I add this:

Red Line 60103 SI-1 Complete Fuel System Cleaner - 15 Ounce

 

I couldn't say what is "wrong" with Shell, maybe nothing. Just that before I converted to e85 I was warned against using it in my aftermarket tuned Miata. I don't hesitate to buy Shell occasionally for other cars if there is no Chevron station nearby.

 

Ok just was curious if your mechanic said anything in particular. Maybe just bad circumstances for him at one time I'm a regular shell buyer which is why I was inquiring. I think some of the other posts here have a point - it is kind of like buying a Guinness. Go to the Irish pubs where it turns over, not to the wine bars!

 

I would buy just enough fuel to get out of that horrid state. Oh, sorry. That wasn't the response you were looking for

 

Your contribution to the discussion is underwhelming, to say the least.