I have a brief question in regards to the oil I should use in my car. I run a 97 XJ6L 4.0L Inline6. I have about 130K miles on it as well. I have been told 10W 30 or 10W40 would be the ideal oil for the car. Any thoughts or reasons.

Thanks

Carthage

 

I bought mine with 63K on it and the oil had just been changed using 15W40. Never had to add any. At 68K, I changed it and put in synthetic 10W30. Think I added about 3 qts to make it to 73K. I just changed it again, this time to 20W50, on the advice of Motorcarman and Brutal, both seasoned Jag Techs.

Haven't put many miles on it since the last oil change, but thus far, it doesn't look like I'll need the kind of make-up oil I did with the 10W30. I'll continue using the heavier oil.

 

I think 10w – 30w is about right unless it gives you a problem. You may ask what problems? Depending on the wear and tear on the engine and the ambient temperature of the area that the car is kept. If you look in the owner’s manual they touch on the subject just a little but not in its entirety. I am attaching a link to a page you should read www.bobistheoilguy.com/cms/index.php I hope this helps! Please keep in mind that you are talking about a car that is 14 years old with 130k miles on it. I used 10w – 30w on my 95 xj6 4.0 for years but moved it up to 10w – 40w in the summer.

 

When I worked at the dealer we used 15W40 Mobil mineral oil on all the inline 6 cylinder engines. Customers sometimes requested different oil or brought there own.

bob gauff

 

15w40 is what Ive read, ive just bounced it off the oil company I use.

I will feedback with answer.

 

hi i am useing castrol 10/40 in my 40ltr sport 183000 uk miles not useing any oil and good oil pressure if this helps

 

Guys, this was the reply I got.....

I would use a 5w-40 synthetic and you will find those through the link below.

http://www.opieoils.co.uk/c-656-5w-40.aspx

Out of those, the best ones are the Fuchs/Silkolene Pro S, Motul 300V, Redline and Gulf Competition. The Motul 8100 X-Cess, Millers XFS, Fuchs Supersyn and Mobil Synt S are good, cheaper alternatives.

As a budget choice, a 10w-40 will be fine and I would either go for the Fuchs XTR, Millers XSS or Motul 6100

http://www.opieoils.co.uk/c-657-10w-40.aspx

NB: Not related to the company just a supplier I use in the UK.

 

I've been using Mobil 1 10w30, and never had to add any oil at 130,000 miles. On the fist oil change for the X300, I used Red Line (I cannot remember what weight), and it was great, no issues, but at $100 an oil change, I've been opting for the cheaper alternative.

 

+1....20w50....works great!

 

20w 50 thats interesting I use that on my classic jags the E and the BIG GEE

Never heard anyone put it in the newer engines.

Out of interest how often do you guys do oil changes, is it just at service intervals, or do you one in between aswell :?:

My clssics are every 3k for a service or if just driving around locally I oil change every 1k, hence always 20w50 in stock

 

5K miles for me. It's a daily driver ~100 mi/day

Update: got about 1k since I changed to 20/50 and no movement on the dipstick.

 

I just moved from Ohio to Texas and the only 15w40 I'm familiar with is those that I use in my semi's I have seen castol 20w50 but can't find a synthetic 20w50 any suggestion?