losing oil! - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

zeek1403 · 10-26-2006, 19:02

I have a 99 Ranger with 123,000 miles on it. 4.0L motor. I put Mobil1 5W-30 in it recently and it has been losing oil. Just had the valve cover gaskets done. I was told that it might have bad valve seals or weak rings. So, I bought 10W-40. Will this stop the oil from burning? Or should I use 15-40, 15-50, or 20-50? I don't have the money to have the heads removed and new parts put in.

Johnny Mullet · 10-26-2006, 20:23

You have to locate the leak first. Then we can try and help.

zeek1403 · 10-27-2006, 03:37

There is no leak. It's burning. That's what I am told.

Johnny Mullet · 10-27-2006, 14:55

Well if it burning oil, then you either rebuild or replace the engine. You could try a 20W50 and some Lucas to control the smoke, but there is no such thing as a "Mirical in a bottle" to fix the problem.

zeek1403 · 10-27-2006, 20:46

There is no smoke.

thefonz · 10-29-2006, 05:40

How much oil consumption are you talking about? 1 qt. every 100 miles, 1 qt. every 2,000 miles or what. That will tell us how bad it is.

zeek1403 · 10-29-2006, 06:49

I would say a quart every 500 miles or so. Just changed it with 10W-40 yesterday.

hypergas · 10-29-2006, 13:50

try going back to reg motor oil and see if the leak stops or slows down(probably leaking around rear main seal)

zeek1403 · 10-29-2006, 15:12

Just went to regular 10-40...... should that help?

Johnny Mullet · 10-29-2006, 18:43

1 quart every 500 miles and it does not smoke or leak? I find that hard to believe. Good luck.