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Hi for all the people who value stop start, had a rather interesting Volvo/Ford engineer as a passenger this week and rather than a lecture on electric vehicles he had my attention talking about stop/start, mine as usual was zoned out and he enquired why, I explained that my theory was it put added wear on the starter and ring gear he laughed and said it was highly unlikely as both components were beefed up to accommodate the extra loads but in fact my theory wasn't as far off as I thought, he then went on to tell me he was working with the oil companies to produce new nano tech oils because the existing engine technology is suffering with stop/start as when the engine is running the pressured oil forms a hydro barrier between the crank journals and the bearings, when the engine is stopped the journal/bearing come into contact and when the engine starts again there is a lapse between the oil pressure arriving to reinstate the hydro barrier, I.E. extra wear, he then explained that a normal engine is rated to start 50,000 times during its life and a stop/start engine will perform the same function over 500,000 times, so you can see where this is going and apparently the race is on to produce a coating for crank bearings that is self lubricating Teflon and Iron Oxide, Yes, Rust, which in fine particles reduces friction co efficient by 50%, also he explained that the engine conditions for stop/start have to be ideal as it won't work when the engine is too hot/cold or if you have the aircon working flat out, I have never experienced this as my stop/start is never on. Steve.