Castrol magnetic 5-30W ok for 1998 XJR?

[G_T]

Quick question chaps... I'm suppling all the parts for a service on the old XJR and a friend has bought a load of Castrol Magnetic 5-30W.

Unfortunately I'm working away so I've not got the owner's manual. So I wonder if someone could tell me if it's OK to use?

Also, does anybody know how many litres I will need for the oil change? Again I've not manual.

Thanks in advance guys, as ever any help is appreciated.

[BigNige]

G_T said:

Quick question chaps... I'm suppling all the parts for a service on the old XJR and a friend has bought a load of Castrol Magnetic 5-30W.

Unfortunately I'm working away so I've not got the owner's manual. So I wonder if someone could tell me if it's OK to use?

Also, does anybody know how many litres I will need for the oil change? Again I've not manual.

Thanks in advance guys, as ever any help is appreciated.

This is quite useful

https://www.opieoils.co.uk/products-for-my-vehicle...

[G_T]

Cheers for that Nige.

10-40W Magnetic is one of the recommended ones so I'm assuming 5-30W will be fine.

Just need to know how many litres I need now!

[drummerboyXJR]

6.2 from memory, certainly no more than 7

[NST]

i think 5w-30 might be alittle thin for that particular engine version. i think it was afer 2001 when they did the engine revision and went to 5w-30?

[G_T]

NST said:

i think 5w-30 might be alittle thin for that particular engine version. i think it was afer 2001 when they did the engine revision and went to 5w-30?

I'm no expert but I can't see that being a problem?

I was under the impression that the "winters" measurement was only an issue if you were running it in an unsuitable climate. I.e. 5-30W isn't suitable for hot climates but should be ok for the stty Scottish Weather the Jag will be exposed to...

Appreciate your input and I'm happy to be corrected though.

[RW774]

It really depends on mileage. 5/30 may create a smoker if it is a high miler.
try a 10/40.

[NST]

'98-99 engines are AJ26S (supercharged) which are supposed to use 10w-40 oil. AJ27S (post 2000) use 5w-30 oil. what the differences are to the engines i don't know. opieoils states 10w-40 for a '98 xjr and 5w-30 for a post 2000 model year.

Can anyone shed any light on the differences in the engine numbers?

[G_T]

RW774 said:

It really depends on mileage. 5/30 may create a smoker if it is a high miler.
try a 10/40.

Just done over 70K and, to the best of my knowledge, it's been running on 5-30W since 2003. No smoke, compression tested a few months back and all was well. Aside from a ste battery it's been running tip top.

Is it definately worth paying a considerable amount more for 10-40? Seems a hell of a shame not to get it at a bargain price...

[RW774]

Sorry but, if you have used 5/30 for years and intend to carry on using it , Why the doubt??
I`m pleased your car doesn`t burn 5/30 some high milers do, some don`t.

[G_T]

RW774 said:

Sorry but, if you have used 5/30 for years and intend to carry on using it , Why the doubt??
I`m pleased your car doesn`t burn 5/30 some high milers do, some don`t.

Well two reasons (1) I am quite possibly one of the most paranoid car owner's in the world and (2) I was curious what the general concensus was.

In many ways an 11 year old Jaguar was not the logical choice for a man such as myself.

Cheers for the input!

[RW774]

Ah yes, I suffer that too, age related thing .That will be fine on magnetec.
Cheers man