V6 & Synthetic Oil Mileage Question

[echo7]

I've been doing mine every 5k miles but was wondering if i should stretch it out to 7500 or even 10k. I do about 40miles a day to/from work, 75%/25% highway/city. I use Mobil 1 Synthetic.

What do you guys do/use with your 6ers?

 

[echo7]

No one changes their oil round here? lol

 

[Malecoda]

I change my oil every 6-7k miles using royal purple synthetic oil. I also put close to the same amount of miles on my car a day too. Every 10k miles might be stretching it a little to much.

 

[red 92]

I use royal purple and they say it can go 12,000 miles between changes...I change mine every 10,000 miles

 

[08vaporstang]

I use Mobil1 Full Syn or Motorcraft Full Syn and change mine every 5,000 miles. 50 miles a day round trip for me as well!

 

[The Fang]

What do you guys do/use with your 6ers?

I use regular stuff but I change mine every 3-4k and the reason is buy this time the url is starting to get burnt. synthetic will get 1 or 2k more before its plaqed. The 4.0 is a cast iron block.

 

[longalan2]

i use royal purple and i change it about every 3k or so. there have been a few times that i changed it just because she had been setting too long.

 

[Ken04]

I've been doing mine every 5k miles but was wondering if i should stretch it out to 7500 or even 10k. I do about 40miles a day to/from work, 75%/25% highway/city. I use Mobil 1 Synthetic.

What do you guys do/use with your 6ers?

spend $25 or so and send your oil at 3,000 miles to a lab. They'll check it and tell you if you need to change it earlier or later. Plus give you a whole breakdown of which chemicals and metals may be in your oil so you can keep track of engine wear. It's really the only way to know for sure what your oil change schedule should be.

 

[echo7]

spend $25 or so and send your oil at 3,000 miles to a lab. They'll check it and tell you if you need to change it earlier or later. Plus give you a whole breakdown of which chemicals and metals may be in your oil so you can keep track of engine wear. It's really the only way to know for sure what your oil change schedule should be.

So could they tell if there are bits of valve metal in there from too little back pressure, due to a custom exhaust system? That would be neat.