Hay folks got 2 main probs that my mechanics and vauxhall are scratchinng there heads at, so looking for some imput to get to the probs.
Firstly ive noticed the coupe is using alot of oil, at least empty on dipstick end of every month?, ive changed oil grades and hunted everywhere for leaks with no luck. A booked the coupe in at vauxhall and my mechanics to strip it down with the oil seals ect all replaced. Still uses at least 3 litres a month?? head scratching and annoying so is there anywhere particular to look for?? oil type a use is performance 10w 40... tried a thicker with no luck and added engine stop leak but still the same.. however i know the cats buggered so full exhaust next sat but would that have anything to do with it??..
Second traveling down motorway at 80mph av noticed rev counter going above 4000 revs?? ma coupes highly modded and was never above 4000 when doing 100+?? just wondering if idle control need a clean?? but will note- first gear 30 mph=3000revs, change gear sticks at 3000. second gear 40,45mph=4000revs third 50-55=4500revs drops to 3000revs fourth 60-70 4000revs then 80-90 sticks at 3000 then power kick 100-120 with 5000 revs. If this makes sence or common just ignore this one.