This thread is about OIL. My "admonishments" were to those who see no harm in deviating from Jag's minimum octane requirements.
Let it rest, Mikey.

 

"Meets or exceeds" dear fellow, "Meets or exceeds"!
You can get ZDDP supplement additives that can be added to a modern "cat-friendly" oil to bring the zinc level up to around 1,200-1,400 PPM for kit that finds it problematic. This is one of the very few oil additives that's of any actual benefit. Always consult your Pharmacist! ;o)

 

Except that SM does not meet OR exceed previous standards in all respects- it falls far short if it is to be used in engines that require higher levels of ZDDP. I use Rotella in my older cars that require higher levels, no need for additives.

Here's what the API specs actually say:

SN CURRENT Introduced in October 2010 for 2011 and older vehicles, designed to provide improved high temperature
deposit protection for pistons, more stringent sludge control, and seal compatibility. API SN with Resource
Conserving matches ILSAC GF-5 by combining API SN performance with improved fuel economy, turbocharger
protection, emission control system compatibility, and protection of engines operating on ethanol-containing
fuels up to E85.

SM CURRENT For 2010 and older automotive engines.

SL CURRENT For 2004 and older automotive engines.

SJ CURRENT For 2001 and older automotive engines

So, to state SM can be used in any engine older than 2010 is false.

If I have a case of SL oil on the shelf, can I use it in a 2005 car?

The most common oil in the stores today is SM or SL. Can these not be used in new vehicles?

 

I switched to using pure vegtable oil in my car a few weeks ago, and I was thinking I might try olive oil next, but that is like going from dino to synthetic in price.

 

Extra Virgin or one of the generic brands?

 

I would guess that means you have a good idea what's to follow ...

Politics and religion are a safer topic ...

 

Many members turn nose at OEM recommendation on 'sealed for life' transmission, transfer case and differential. Yet some use the same OEM owner's manual to dispute use of synthetic engine oil.

What motivation does OEM apply to engines that's different from transmission oil service recommendation?

 

My 2 cents

Field evidence accumulated remarkably quickly to demonstrate that the sealed for life concept was incorrect, despite the small size and relative youth of the fleet. No such evidence has arisen indicating superiority of one oil over the other.

As always, each to his own.

 

Also, trans life is apparently regarded as 100K miles. Engine life is much bigger. Go figure...

 

Currently Wilkinsons are doing 4L of Magnatec 5/30w fully synthetic A1, as recommended by jag at £12.99 good price. Not quite as good as when ASDA did it for a tenner some time back, still got garage shelves full of that.

 

Hey there jim goose
I see your based in Cork, as am I, can you recommend any good mechanic for doing odd jobs on my x type 2.0 diesel? I don't have any thing in particular I need to do right now but I have the NCT coming up,soon and I'm sure they will find something that needs doing! and I just want a recommendation if at all possible.
Thanks

 

Ian Aherne at Munster Jag, Spur Hill. Top man.

 

My Owners Manual has a specific admonition "Jaguar does not approve the use of synthetic oil in the V6 engine"

It remains silent on the on the issue of the V8 engine.So my conclusion would be synthetic is approved,providing it meets the specification set by Jaguar.

 

Ooooo--I'm 100 posts old!Do I get a card from the Queen?

 

Best I can do!

 

As a new owner of a 2000 S-Type 4.0 with 110k miles and someone who regularly changes my prior vehicles' oil every 3,000 miles, I find this discussion interesting. I am nervous about waiting 10,000 miles to have my oil changed, but maybe I have just been one of the sheep when it comes to such oil-change marketing...

 

Never mind the oil, has your 4.0 had the Tensioners changed? If not, do it NOW.

 

Hi Ben, I reckon that you are right in your desire to do regular oil changes. Whether every 3000mls is appropriate only you can judge based on the conditions of use, but it will the engine internals nice and clean and well lubed.

 

Nothing is too much trouble for our members:



Graham

 

I don't know if it applies here, but I do know that many engines are designed to work with non-synthetic engine oil oils specifically. Apparently it's all to do with oil seal material and their design.

Engines that are perfectly oil-tight on dyno or semi synth oil will suddenly develop all sorts of leaks when filled with synth oil as it gets past conventional seals.

On the more general subject of Synthetic oils, does anyone know what percentage of truly synthetic oil needs to go in an oil for it to be labelled "Fully Synthetic"? You might be surprised?????

When Jaguar talk about "synthetic oil" perhaps they are referring to real fully synth, not just the stuff on the shelves labelled "fully synth".