i have a 1998 xjr with its original engine [105,000 miles] i have done the chains and tensioners, but what i would like to know is it ok to use an injector cleaner, either diy [pour a bottle of x in the tank] or one of the pro flushes ? would any of them harm the nikasil? or should i just let the old girl soldier on as is?

 

If its running fine leave it alone. Mine has 194k runs fine.

 

Why do you want to clean the injectors? The only enemy to Nikasil is Sulfur. I use BG44K once a year.

 

My VDP is 98 with 85K on original engine. I use Lucas on every third-fourth tank.

 

+1. Possibly the greatest injector cleaner known to science.

 

It's the only one Jaguar recommend.

 

I've never seen this one in my local stores.

 

You will not find in most local stores but you will find it in most dealerships or garages. It is good stuff and at $20.00 +/- a few it should be.