Hi! I have a 2004 Jeep Grand Cherokee with a 4.7 v8. It has about 209,000 and ever since i bought it a few months ago it burns a heck of a lot of oil. I changed the oil when i bought it and just been topping the oil off since it burns so much. I was wondering which oil additive i should use to prevent it from burning so much oil? Thanks!
18 years old with over 200K miles - no additive will fix a worn-out engine. All you can really do is maybe install a new PCV valve and see if that helps.
Any additive will only help temporarily. Your piston rings are just worn out.
Apparently, that 4.7 wasn't maintained well. Had a 2001 Grand Cherokee (WJ) with the same motor. 337,596 miles on the odometer at time of sale and hardly burned a drip of oil. I used full synthetic oil and changed every 3,000 miles religiously. Never had a problem with that motor except for leaky valve cover gaskets and a leaky oil pan gasket. That, of course, will happen with any engine given enough time.
