which weight oil should be used.

Messages
8
Location
ga
My friend has a 88 ford ranger with 300,000k on it and he was told to use staight 40w oil could some of the experts speak up and let me know what to tell him. [I dont know]
 

Patman

Staff member
Messages
21,989
Location
Oakville, Ontario
If he's burning a bit of oil he might want to go with a 10w40, but he's probably best to stick with one of the high mileage 10w30s, which are very thick 30wts.
 
Messages
47,693
Location
Duvall WA - Pacific NW USA
Why not just 20W-50? Why is he being told this? Leaks? Wear consumption? Either way this is always a downhill proposition -to just use a "thicker" oil, if the car is mechanically ill. Eventually fix or throw away will happen, and going to a thicker oil sometimes will make wear worse (straigt 40W on a cold morning??) We need more symptoms or a true diagnosis.
 
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