View single post by rday
 Posted: 03-26-2015 09:22 pm
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Joined: 01-07-2015
Posts: 4
Hello All,
  I have taken ownership of a 74 JH.  I realize this topic has probably been talked to death but when it is stated that the engine oil should be 20w-50, is this the same with all brands of oil?  Is Castrol 20w-50 the same as Napa 2ow-50?  I believe the previous owner changed the oil and used 10w-30.  I have also topped off the SU carbs with 10-30.  Should I switch to 20w-50?  I do get the occasional hesitation and sputtering while accelerating.  Could this be the problem.  I am in Northern New England in the US and I only run it in the summer
                Thanks for the input,