I finally saw what happens with a full synthetic swap at 100k miles

Everyone told me to never switch from conventional to synthetic on a high-mileage engine, but I did it on my 2002 F-150 with 103k on the clock. After 5,000 miles, not a single leak and the oil comes out cleaner than it ever did before. Has anyone else tried this on an older truck and seen the same thing?

2 comments

2 Comments

lucas_price836d ago

Yeah reading your post reminded me of when I switched my old '02 Silverado over at about 95k miles. I was real nervous about it because of all the horror stories online about sludge and leaks. I went with a high mileage synthetic blend first for a few oil changes just to ease into it, then did a full synthetic about 3k miles later. It's been about 15k miles since and I honestly think the engine runs smoother and it's way cleaner when I drain it. No leaks at all either.

thea_knight6d ago

Hey glad it worked out for you. I did the same on my '99 Silverado with 120k and never had issues either.