I've got a '02 Hilux 2.7 (3RZ-FE) with a 177k km on the clock that I've been wanting to service. I've recently converted it to gas and was told that I should run gas leads and plugs, is this true and if so which ones should I get? I was also wondering if there was anything else I should change because I'm now running on gas? I was wanting to do a full service oil and filter, fuel filter, brake fluid, brake pads if required, gearbox oil and diff oil. If you could recommend some suitable brands and types of oil I'd muchly appreciate it, as I haven't serviced it yet since I got it. Cheers mick