Quote:
I noticed when putting 15W40 in it, the idle would go up too much when warm (engine would do almost 2k RPM, while on cold I would barely be able to start it).
Lighter oil (10W40, 10W30, 5W30) gives more constant idle.Lighter oil (10W40, 10W30, 5W30) gives more constant idle.
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I hate to pop your oil myth bubble.
A well tuned-up truck/car/scooter/ lawnmower/snowblower will start in any range of temps.
Oil temp/weigh has NOTHING to do with how something starts or idles !!!.
PS, It does in diesel engines only, thats because of the cold diesel fuel = lower flash point.
