I will be completing my first oil change since purchasing my 2008 S-type. The factory recommends Castrol 5w30. Any suggestions for other oil and filter options.

 

Conventional Castrol 5W30 is what I have always used in both of our Jaguars. It works just fine....

 

The best oil currently on the market, even exceeding Mobil1, is Shell/Pennzoil Ultra Platinum condensed from natural gas to create the synthetic stock. WalMart has 5 quart for around $27. I exclusively use Mobil1 M1-213 filter.

 

Use whatever brand you like the most that meets the Jag spec.

There is no proven advantage to one over the other.

 

Actually there is.

 

If it meets the Jag spec, no there isn't. Or please post a link.

 

When I was at Chrysler Corp. Parts and Service Division, at Trenton Engine Assembly, extensive tests were done with various oils, under some of the most extreme conditions. I can tell you from personal experience, there is a difference. It's a very myopic view to say because an oil has SN API score, they are all the same. They aren't. Oil stock and base material, to detergent quantity and quality, to coking, to molecular strength... All one has to do is to choose 10 different brands of same weight and API rating, and do a cold-pour test.

 

Hardly relevant. Just stick to the jag spec. We have no oil-related failures reported out of the thousands of cars and millions of miles.

 

Precisely. Lab results don't always correlate to real world results.

 

And transmissions are sealed for life too.... Right?


AMSOIL Performance Testing Archives

 

Is that so? What is your understanding of the top 2 reasons for oil related wear in an engine. (when and how)

 

When engines consistently outlast the rest of the car no matter how badly they're treated, it's sort of a moot point.

If it makes you feel better to use one oil brand or type over another, please go right ahead. The car couldn't care less.

 

Man, I used to work for one of the Big 3. I do know better, but if it makes you feel better, it's your vehicle, you can do whatever you wish with it.

To answer the question you couldn't, 1) cold start, and you rely on any film that may be there until pressure rises. 2) scuff protection.

 

No. Who said so? What the heck anyway has such a mad statement got to do with changing engine oil as specified for a specified oil?

What a silly post.

You sound like you don't know that Jaguar do say to change the trans fluid. Well, they do.

 

No, not 'couldn't' - it's 'wouldn't'. There's at least five principal reasons for oil-related wear in an engine, or seven if you want to include engine peripherals. No matter which two I might have selected as an answer, you would have scoffed and said the answer was wrong.

Aren't oil threads so much fun?

PS- you're not the only one to have worked in 'the industry'. For about five years I taught new recruits with shiny new engineering diplomas fresh out university, now entering the 'real world'. One of the questions was related to the function of the lubrication system. A two out of seven score earned a 'D' and a dunce hat.

 

Agreed, especially as the question concerns an N/A engine.

What exactly is an oil-related failure? Maybe engine death after 100k miles when others go for 200k miles. Maybe the need for rebuild after too much smoke. Did anyone ever suggest that those things were oil-related? Not to my knowledge. But of course they were.

 

Concerning your vehicle, do whatever you want.

 

I do what Jaguar recommend. They know more about their engines than I do or you do.

If you like to think you know Jaguar engines better than they do, no problem for your car but you're on dubious ground to try to tell others to do as you say instead of what Jaguar say.

And if you like Magic Oil X then fine for you. But trying to say it's better for a specific Jaguar engine is just not right when Jaguar don't even say so.

 

I am about to purchase engine oil and filter for my 2.5 V6.
The Jagaur oil spec is : WSSM2C913 A or B which is pretty common to several other car manufacturers.
The oil spec is fully synthetic and everything I have found about the V6 engine oil so far refers to fully synthetic.

There is a wide range of brands and prices for this spec of 5w30 oil.
I am going to buy 7 litres so I have some spare for top ups, although I've not decided which brand to go for.

I hope that is of some help to you?

 

The context is "there is no difference in engine oil as long as it meets a given API rating" and this is clearly untrue. Independent studies reveal there are clear differences. I still stand behind my recommendation the OP. To make comments as if this is nothing more than dubious assertions is clearly biased on your part.

Synthetics provide numerous advantages over conventional stock, and for nearly 50 years, oil companies have tried to develop methods of condensing natural gas back to synthetic stock. Shell just happens to be the only one who is currently doing it globally. Lastly, it is Jaguar's recommendation that full synthetic based oil stock be used. (ACEA-A3)