2007 Jaguar xk coolant and spark plug change

[leelane588]

Hello

Have a 2007 jaguar xk 4.2 with 54k on clock

Had serpentine belt replaced and transmission service

However when should the coolant be replaced and spark plugs ?

Is it worth getting them done as cannot find anything in owners manual car drives a1

Thank you in advance

[mike020150]

Jaguar's recommendations for the coolant change are at 10 years or 150K miles. For plugs, the recommendation is 100K miles. Both are designed to make the costs of a Jaguar look competitive with its fleet opposition rather than being geared to a long service life. Consequently, a more conservative approach may be better when applied to an older car, as the XK is by now. Mike.