Re: ROTELLA 15W 40 Oil
Check the gaps at the rotor tip on all contacts in the distributor cap body . A lot of times the gaps will be all over the place in some reproduction distributor caps . Ford recommended a conservative gap of twenty five thousands . For hotter spark at the spark plugs I run a gap of thirty five thousands at the rotor tip . Jumping a wider gap ,to a point will increase the spark intensity . Too much gap will advance the timing to the point that it will run poorly if at all . Running too rich could be the cause of darkening of the motor oil . A hotter spark should help ignite the raw gas .
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