Okay guys Just a quick question, i have thought of running full synthetic in my pickup only for the reason to get more mileage out of it between changes. Right now i change at 5,000 miles running motorcraft 5w20. Was thinking going full synthetic as in mobile one or valvoline and maybe extending the oil changes to 7500 or 8000 miles, the truck has 110,000 miles. What do you guys think? Also if i run the full synthetic can i still run the motorcraft filter for that long? I hope im not beating a dead horse but just wanted some opinions. Also my wife has a 04 taurus and she avgs about 5000 miles in a month and a half and i was thinking of running full synthetic in hers also cause how often we change the oil in it. I run MC 5-20 in both vehicles and have been super happy with it just trying to get more bang for the buck if you know what i mean. Thanks guys

 

how many miles on her rig?

the sooner you start using synthetic the better...at 110k i wouldnt

im not sure it if will hurt anything switching with those miles BUT i have heard its better to start early with lower miles

 

im at 153k on mine still running MC 5w20 and 820s filter, still no oil leaks!!!

and yes a MC filter will last 5-8k dont feel safe grab a mobil filter from o reillys

 

If your driving is considered normal in that you are not running E85 gas, not towing over 20% of the time, not idling a lot, then you don't need to change oil but every 7500 miles. This is the recommendation by Ford on all of it's trucks. What has happened is that these engines are extremely clean burning and don't generate the deposits of old. The oil formulations have changed to also limit deposits and keep the oil viscosity stable. The latest formulation of Motorcraft oil uses a GpIII fuming acid washed white base oil that is extremely pure and is loaded with saturates, which is ideal. The oil is built around the Ford spec of 7500 mile OCIs. I've been changing my 04 4.6 at 7500 miles for years now and the reports come back with low wear metals and TBNs of 2.0+ which means there is still active formula to protect the engine. I could probably add another 1000 miles to the OCI but 7500 is enough for me. So if you are an average driver under average driving conditions, you don't need a synthetic to go the distance and you don't have to spend a lot to get there. Because the engine burns so clean, you don't have to worry about the filter going into by-pass.
FWIW, most of the synthetics you buy over the counter are a GpIII base anyway.

 

The Taurus has 111,000 miles and i have heard the same about lower miles. But i also thought that if MC was Syn Blend then there may not be much difference in the oils.

Yea my truck has had nothing but MC in it since it rolled of the assembly line, when i bought the truck with 77000 miles on it the dealer gave me all the service records on the truck and MC was Always used. One time i went with Valvoline Synblend cause they were out of MC. It doesnt leak or use any oil

Thanks for that info i take the vehicles to walmart cause i dont have time to get it done. I have a buddy that works at wally world and hes the only one that does the oil changes. I just get tired of paying 35 bucks every month or so for a MC oil change where i can pay 55 for full synthetic. I was just thinking of saving money but if i can pull off 7500 then that would be good also. Heck there for a while i was changing every 3000 then went to 5000 and i thought that was as far as i should push it. Thanks again

 

I would use Mobil-1 Extended Performance & you should be good to 10-15K miles between changes.use a Mobil-1 filter also!....Just something to think about...

 

i'd just do what you have always been doing. It's worked so far :thumup: