What Oil do you use?
Senior Member
Joined: Sep 2004
Posts: 483
Likes: 0
From: AZ
Mobil 1
I have a 2010 SCREW with a 5.4 and a 2001 Cobra SVT
I run 5W20 MC in both
My previous truck was a 97 F150 4.6l- I used M1 5W30.Sold truck at 198,000 mi.
These engines tended to clog up egr passages. Ever few years I removed the EGR- never found deposits in the EGR or passages. Was the M1 responsible who knows?
I run 5W20 MC in both
My previous truck was a 97 F150 4.6l- I used M1 5W30.Sold truck at 198,000 mi.
These engines tended to clog up egr passages. Ever few years I removed the EGR- never found deposits in the EGR or passages. Was the M1 responsible who knows?
Member
Joined: May 2008
Posts: 52
Likes: 0
From: Missouri
Kraft- I used Castrol GTX for at least 20 years and have nothing but high praise for it. Kept the inside of the engines clean as a whistle and didn't really use oil either (pint or less in a 3k mi change) I also noticed the black deposit in the bottom of the bottle many years ago. Was also troubled by it but read somewhere that it was one of the additives, so from then on I just shook it up before pouring. I usually buy my oil at least 2 cases at a time, so it may sit a while before the last is used. Only noticed it in those cases where it had set for quite some time. Had to good a service from the oil to quite it. I'm sure it wasn't dirt in the oil. 
I switched to Valvoline for conventional oil use mainly because of price. If you're in the midwest buy valvoline at Orscheln Farm & Home stores. For the last year I've never paid over 2.50 a quart there. On sale occassionaly for 2.00 a quart. Walmart wants 15.00 for 5 quart jug.
Also check out fleetfilter.com for wix filters. I buy a years worth of oil, fuel and air filters for all my boy toys and save $ on the cost of filters. Not worth it though if you're just buying 4 filters at a time. You buy filters at wholesale prices but you have to pay shipping. So you have to buy several filters to overcome the cost of shipping to save.