Eavning, just been doing fair bit of work to my 86 2.5 n/a. It's had all new filters new oil cjange new timing belt and new fan belt new downpipe. I've added some diesel additive in the half full tank just to clean some grot out. I've been driving round today and it feels like it has slightly less "poke" it goes ok but just not as much power there as it used to be. Is this the additive in the tank or new fuel filter etc which is giving it less. Poke?? Thanks all.