Nanni question

[Geordy]

Hi all , I have an Antares 710 with a Nanni T4 155 Turbo diesel ( which I believe is based on a Toyota Land Cruiser engine ) . The service interval for the timing belt is only two years and the belt , tension roller and tensioner comes in at £480 ( the kit for a land cruiser is £120 and I was wondering what the difference is , seems a short service interval also )
Second question is the o rings on the heat exchanger and intercooler need replacing every two years and this also seems a short life . Opinions appreciated and thanks in advance

 

[essexboy]

You Appear to have forgotten the Marine Added Tax ! Can you look on your belt and take any numbers to your local Toyota dealer to compare ? On the service life, I was involved in testing belts ( for another Manu) temp an humidity was found to be a significant factor in lifespan, so maybe a better be safe than sorry approach ?

 

[Geordy]

Thanks Essex , good advice