yeldogt,

Thanks for your expertise, and I'm glad you brought up that "Approval" issue. I had noticed that on the MB BeVo document 236.14 which I linked to previously and had intended to pass it along. Here's the exact caution from MB:

"We recommend using only products, 1. which are distinctly marked with the label indicating the approval of Mercedes-Benz, e.g. “MB-Approval 229.51”. Labels referring e.g. to “MB 229.51” don't have an approval of Mercedes-Benz. 2. Which are listed in the current MB BeVo. Only listed products are tested and approved by Mercedes-Benz.

And here again is the link to BeVo document 236.14:

MB 236.14 - Automatic transmission fluids (ATF, Specification 236.14) - Mercedes-Benz Specifications for Operating Fluids

Cheers,

Don

 

The 236.14 is a later ATF introduced alongside later transmissions. It is reputedly
thinner.

Don't forget that there is a hot discussion going on in the X350 section as to
whether a fluid used in a Ford variant of their ZF transmission is also suitable
for some other variant of the same transmission.

Anyways, I am happy with Valvoline Maxlife Dex/Merc. And while it is
not "approved", it was mentioned in a Mercedes training manual for
the 722.6 as suitable. Widely available, especially at Walmart, and
not expensive at all.

 

OMG...I think my head is going to explode....lol.

 

You asked.......

 

Mikey, that I did....lol

I found the NFK-IFR5N10 spark plugs on eBay, am going to purchase those and return the others to Autozone.

 

I know that feeling.

 

If I flash my ***** to distract you all can you come to an agreement on transmission fluid?....lol

 

Did we ever get a milage on this car? I glanced over everything again .. don't see any mention. Any maintenance history?

Jennifer -- what color is the lock cap on the transmission dipstick tube. You can't buy the factory color for replacement -- that's how you tell if it's been changed.

We all know how to get the correct part -- you go to the dealer and pick it up .... pay. With the forum we have collective knowledge. I can tell you that the Mann air filter is a very high quality filter -- but it's not as nice as the OE filter that Jaguar sells .. and by all accounts made by Mann. Same goes with the OE Jaguar oil filter -- I have never held an aftermarket Jaguar filter that was as heavy -- why? Don't know. I'm fine with the Mann air filter for a car that I drive maybe 5k a year in a very clean environment -- I buy the Jaguar oil filter.

The normal process at the MB dealers is to open the drain plug on the transmission -- draining the fluid. Replace the drain plug and electrical contact -- replace 5 quarts of fluid and check .. install new dip tube lock. They don't drop the pan or replace the filter. Some people when they do the service report the fluid to be dark and the pan dirty -- others say everything looked rather good at 100k. Mine has 70k and has never been touched. I bought the Mann filter, gasket and the Fuchs oil to do one of my MB's in the spring ...

For me -- and this is just me. I'm not going to risk putting the wrong fluid in when the correct stuff is $10 .. or less. Both of mine are relatively low mile examples -- one I bought new ... so they are going to be around for a while.

The reason I have asked about your coolant color -- Jaguar changed coolants a couple of times -- the early cars had water pump issues. Your car could have had a coolant change -- especially if it went to an independent shop. The fluids can't all be mixed.

 

I think the answer is 'no' to coming to an agreement, but don't let that deter you.

 

Hi Jennifer,

Sorry to have discovered so many contradictory references on the correct parts for your car, but you might want to read my post #22 again. According to the X308 Workshop Manual, the correct plug for your supercharged engine is NGK PFR6G-13E, with a heat range of 6 and a 10K resistor.

The IFR5N10 has a heat range of 5 and a 5K resistor, so it may be too "cold" a plug for your engine. It is also more expensive than the PFR6G-13E, so before you purchase them, I would strongly recommend that you pull one of the plugs already installed in your engine to see if you can read the part number.

Cheers,

Don

 

Years ago we had a Tech that used to post often -- I think he was from Ohio. He mentioned the various possibilities .. and also those not to use. Unfortunately, he stopped coming around a long time ago. I can't find the post -- it's before 2012.

Once again we enter the world of Jaguar. Limited production engine -- as far as engines go. Used in Jaguars/ Range Rovers. I'm assuming the same spark plug is in the LS and Thunderbird's V8 -- maybe not because of the different heads?

It's my understanding that if you get the plug from Jaguar it will be the PFR6G13E -- the "E" being somewhat of an outlier .. when you cross reference. It a platinum plug -- that's what was around back then. Platinum .. not iridium. From all accounts NGK makes an equal iridium -- I don't have my notes.

The platinum plug is still available -- about $10 - $11 each. I don't know what Jaguar charges .. more I would think. If everything lines up and you hit sales the NGK can be bought for $6 - $7 . So the known correct plug is + $32

I normally like the Japanese plugs -- NGK or the Denso ... I buy the Beru plugs for my german car .. I avoid Bosch as much as possible.

 

That's very helpful, yeldogt!

Jennifer, the only real differences in the newer Iridium plugs are longer life and generally a higher price.

According to the NGK page at the link below, the platinum plug PFR6G13E cross references to the iridium plug BKR6EIX-11 IX, BKR6EIX-11P, orBKR6ERX-11P. That should give you plenty of options!

[NGK-Platinum-PFR6G-13E] - - It's Free! : NGK Spark Plugs Store!, NGK Spark Plugs We Sale, Spark Plug For Racing car, Automobile, Motorcycles, ATVS, Scooters, Marine Engine, Agricultural Equipment


Cheers,

Don

 

Don, I found past posts saying that NGK-IFR5N10 was for the supercharged engines plus you said is was listed under the MY2000. I don't want the old platinum ones I want the newer Iridiums.

Yelfogt, my car has 96,000 miles on it. The only service records I have is a Carfax report so as a preventive safety measure I am changing everything out...better safe then sorry as they say. The current coolant in my car is green and I know you shouldn't mix but I am going to do a complete flush and change to new fluid. I don't have knowledge or tools to pull parts and look. I am researching and purchasing all needed items and a lovely gent on these forums who isn't local but within a few hrs drive is going to help me do all the work. I will be getting a crash course on my jag over a couple of days.

 

Hi Jennifer,

I believe I mentioned in my first post that there was disagreement in the documents regarding which plug was correct for your car, with one document specifying IFR5N10 but other documents specifying either PFR5G-11E or PFR6G-13E.

I think I may have mostly solved the mystery.

The answer is, it depends on the date when your car was made. This can be determined by the last six digits of your Vehicle Identification Number (VIN) or by the month and year of manufacture, both of which are printed on the vehicle identification label that is on the rear edge of your driver door.

At the link below is a chart showing the first VIN numbers by year or new model date. The VIN shown for the start of the 2000 Model Year is F00103:

http://www.jaguarheritage.com/conten...is_numbers.pdf


At jaguarclassicparts.com, the parts service of the Jaguar Daimler Heritage Trust, the spark plugs listed for the X308 XJR are:

Up to VIN 878717: Jaguar part number NCA3850HA2, which is a Double Platinum plug. According to NGK, this is their PFR6G-13E (2341) plug, as specified in the Workshop Manual.

From VIN F00035 onwards: Jaguar part number AJ84575, which was superseded by the newer part number C2A1535. NGK says the cross-reference for both plugs is their IFR5N10 iridiums. So you might be fine with those.

However, the NGK U.K. spark plug cross-reference includes one more wrinkle. Depending on the date of manufacture of your car, they state the correct plugs should be:

Sept '97 - Feb - '00: PFR6G-13E (2341) Heat range 6, 10K resistor
Mar '00 - Mar '02: PFR5G-11E (3000) Heat range 5, 5K "special resistor"
Mar '02 - 12 '03: IFR5N10 (7866) Heat range 5, 5K resistor


The heat range & resistor info comes from ngk.com and the manufacture date info comes from here:

NGK Partfinder for Cars & Light Commercial Vehicles


So here's what I believe to be the correct information for your 2000 XJR:

If your car was made during February 2000 or earlier, the correct platinum plug is PFR6G-13E (2341), and as I reported earlier the optional iridium plugs are BKR6EIX-11 IX, BKR6EIX-11P, or BKR6ERX-11P.

If your car was made during March 2000 or later, the correct plug is PFR5G-11E (3000) and the "approved" optional iridium plugs are BKR5EIX-11 (5464), BKR5EIX-11P, or BKR5ERX-11P:

[NGK-Platinum-PFR5G-11E] - - It's Free! : NGK Spark Plugs Store!, NGK Spark Plugs We Sale, Spark Plug For Racing car, Automobile, Motorcycles, ATVS, Scooters, Marine Engine, Agricultural Equipment

However, IFR5N10 appears to have very similar specifications to PFR5G-11E, with the exceptions that its center electrode is 0.6 mm compared to 1.0 mm for the PFR5G-11E, and the PFR5G-11E is listed as having a "special resistor" that is not indicated for the IFR5N10.

All that to say, if you've already spent the money on the IFR5N10s and they are correct for your VIN, you should be fine.

However, if your car was made in February of 2000 or earlier, you should probably go with the hotter PFR6G-13E (2341) as specified by Jaguar.

Sorry for all the rabbit trails, but I hope this sorts it out. Sorry to include all the research, but I wanted to reduce the number of outstanding questions for the benefit of future readers.

Cheers,

Don

 

The last 6 of my vin is F10650.

 

Don, I am truly impressed by the amount of research you did to sort this out. I was starting to get dizzy by the end of the post.

 

Looking over my notes I see that my earlier car used the 13E ... my 2002's use the 11E (NGK PFR5G-11E) Same plug for SC and non SC in the 2002's

Jaguar OE plug for the 2002's has electrode gap set at 1mm. I believe this may be the difference with the "E". One would have to check the reference chart and see the non "E" plug's gap. It's one of the reason I just get the OE plug.

Jennifer: I no longer have the earlier car -- I can't look at the manual. Look in your manual -- it will have the gap.

The Jaguar coolant is orange - ish. Jaguar did have earlier coolants of different colors -- but not green. So you don't have Jaguar coolant. Just make sure you use the proper coolant -- the Jaguar coolant is good for 5 years. My 02 bought new will be changed for the 3rd time this summer.

 

Don't know for sure about the 308, but the 300 has a fuel/petrol-filter, can also get clogged, so don't forget that one.

 

So according to Don's research (you rock Don!) I had purchased the right ones to begin with from Autozone and then I returned them and purchased the wrong ones from EBay....sigh.

 

I'm surprised that no-one has brought up the subject of blinker fluid yet. I change mine every year, and always use the synthetic stuff, for more positive turn indication for the first few minutes of warm-up.