hi guys,
i am new to this forum. i have recently bought a 2014/15 f type v6 s roadster and of course i love it! i also have a 981 boxster S. as i am very pedantic in keeping my cars in great condition, i want to change out out all the fluids in the jag. from my research it appears only 5w-20 or 0w-20 are "required" in this engine. i was hoping to be able to put something thicker like a 5w-30 in this as i live in Australia and it does get hot.
can i please get some advice on this?

Thanks.

 

You should stick with the recommended oil. I would not go beyond the 5W-20. Engine is designed to run with those two optional oils and changing it up will just create potential issues, wear, or premature failure that would not be covered under a warranty. Not only should you only use those two oil grades, you need to also only use JLR Spec/approved oils so you get the proper wear package and friction modifiers...The oil in newer cars is no longer just there to make things slippery...

I have and do own quite a few Porsches as well (911 Turbo, Boxster S, Cayenne S, GT3) and similar rules apply to them as well, though the Porsche engine designs are a little more flexible/forgiving with Oil viscosity and weights...I still follow their guidelines a closely as possible.

DC

 

Thanks Therock88. interesting, yeah my boxster s takes 0w-40 weight. to me its a little weird that the jag "needs" those 2 weights specifically. i dont think the tolerances in the jag engine would be tighter than normal performance engines? i suspect it may have something to do with fuel economy/marketing? i did call a jag dealership and they advised that a 5w-30 would be fine, this was doncaster jaguar in melbourne. another independant jag mechanic told me that the thinner weights are purely for econmoy, who knows.
i think i may just go with motul oil or liqui moly in the recommended weights. has anyone here tracked their car with this lighter oil and did an oil analaysis after?

 

before my first oil change i had to top up the oil on my ftype, i topped it up with the recommended weight but accidentally did not use the jlr specific oil. my car acted extremely weird and my fuel milage skyrocketed, i went to jag and got the oil changed the next day. i would not mess around with this engine

 

i just checked my service records from the previous owner who had the car serviced at a jaguar dealer and they used castrol 5w-30 in the engine, so not sure why all the fear here advising to put 0w-20 in the car or the car will explode, surely the engine is not that sensitive and jag would be stupid to build an engine that sensitive. maybe 0w-20 is fine for colder climates.

 

Hey..

You asked the question, and got a valid answer. No one has "fear here" or said the "the car will explode". Simply responding to your question with valid information that is prudent to what all of the documentation and experience states.

It is your car, so you can run molasses or salad dressing in it for all I care.

Enjoy,
DC

 

no need for that kind of response man. im just questioning and concerned to get the best oil i can. please check out this link by Castrol advising that 0w-30 oil meets jag specs. in a hot climate id be more comfortable putting this oil weight in. hopefuly this will help future owners with similar question to mine.
https://www.castrol.com/en_au/austra...trol-edge.html

 

Castrol developed the Edge Professional oil specifically for the Jaguar/Land Rover engines, and in the 5w20 and 0w20 weights...and the clearances are indeed very tight. The timing chain system and the direct injection configuration depend on the characteristics of oils that meet the JLR specifications: Castrol Edge Professional, Motul, and LiquiMoly are among the very small number of oils that do meet the specifications in the specified viscosities.
The engines are not delicate but they do require "care and feeding" that meets specific standards. And to be practical, these cars and these engines are simply too costly for anything less. It is not a matter of fear, but of caution.

 

Actually, that 0w30 is not the specification for use in the supercharged V6 and V8; the correct specification is JLR51.5512

 

oh ok thank you SOV211. so many oil weights and specs. yeah i might just go with what is recommended and change every 5000kms and be done with it. lol

 

The problem: The Castrol oil you cited meets the JLR specification for their DIESEL not gasoline engines! The only acceptable oil for our supercharged engines is one that meets the JLR51.5122 specification, and that is not in w30 weight.
You will LOVE this car.

 

Thank you very much guys and SOV211 for taking the time to "educate" me. i love my sports cars and i am very pedantic about taking care of them. looking fwd to reading posts on this forum.

 

My used oil analysis indicates that the recommended Castrol Edge is doing well. I'm not the only one. Search for oil analysis. There's a thread here, plus quite a few posts outside that thread. My analyses indicate that at 5000kms, you've got a *lot* of life left in the oil. Oil technology has come a long way since my days as a professional mechanic.

 

Steve, that is very good news...I would start to get a bit uncomfortable about the condition of the oil around the 5,000 mile/ 8000 km mark, especially because these days we have no dipstick to check colour and clarity (not the right word, I know).

 

I have always used SAE 0W-20 meeting Jaguar Land Rover specification STJLR.51.5122.

In UK where I live this is available as:

Castrol Edge professional E
Mobil 1 ESP x2
Motul specific 5122
Liquid Moly Special Tec LR
Fuchs GT1 PRO C-1

I do however have a different opinion to many owners on this forum in that I change engine oil every twelve months or 16,000 miles , whichever occurs first.

I accept that it's each owners personal choice how frequently they change their oil, but find it surprising that many owners will go with JLR recommendation for 0W 20 oil to 51.5122 specification but won't accept their or the oil manufacturer recommendation for change interval.

Synthetic engine oils using group 4 and 5 basestocks with modern additive packages are substantially higher performance and longer lasting than group 3 based mineral oil such as the 20W 50 that I used in the 1970s and changed every three thousand miles.

 

The synthetic oils are truly longer lasting than the mineral based oils but not by five times. The additives will deplete and oil analyses that I have done at every oil change suggest that 8-10k intervals are advised with my style of driving. The long intervals specified for modern vehicle is forced on the manufacturers by environmental regulations.

 

Agree with this, and another thing to consider with oils, is as they go through heating and cooling cycles they become acidic... and if for no other reason, I change oil with a more frequent cadence for that reason alone. Also short trips are the worst kind of driving for this issue as moisture is not boiled off during driving cycles.

Certainly each person can do what they feel makes sense, this is just for additional information.

DC

 

Ah, the bi-weekly oil thread!

20,30,40 weight; Oil begets in brethren hate; Oil in families debate; Oil does friendship separate; Oil does civil wars create.