I currently use MotorCraft 10w30 synblend with PureOne filter in my V-10 Ex. with 98000 miles. I use it to tow my 8000 lb travel trailer and I was thinking of trying a full synthetic 5w40 due to towing. Too heavy? A better suggestion? What do you guys think?
Ford Excursion V-10 98k should I go 5w40?
- Thread starter Chevman66
- Start date
- Status
What the recomment oil weight from factory ? Mobil 1 ( factory recomment weight ) high miles with motorcraft filter, can get both cheap at walmart.
I would keep using the 10W30. While I don't think a 5W40 would hurt, your mod motor doesn't really need it. The MC syn blend is an excellent oil too.
Honestly, if you're concerned with wear and tear from towing, it's not just your engine that needs to be addressed, you should address the transmission fluid in your transmission and gear oil in your differential as well.
But to answer your question, I'd upgrade to a full synthetic such as QSUD if I had concerns of your nature.
But to answer your question, I'd upgrade to a full synthetic such as QSUD if I had concerns of your nature.
Originally Posted By: Chevman66
How about the trans fluid/filter change? Go with Mercon V as replacement for Mercon? Manual says absolutely no mixing of these two.
Wonder why no mixing? Doesn't make sense to me.
I would do a full change w/ Mercon V and add Lubegard Red; 1oz/quart(personal preference).
How about the trans fluid/filter change? Go with Mercon V as replacement for Mercon? Manual says absolutely no mixing of these two.
Wonder why no mixing? Doesn't make sense to me.
I would do a full change w/ Mercon V and add Lubegard Red; 1oz/quart(personal preference).
When your vehicle came out, they were incompatible, but that has since changed. However if you go shopping for fluid, still look for Mercon compatibility on the bottle. That way, you know it works. I'd say give Maxlife a look. Also, make sure you drain the torque converter if you decide to change the fluid and filter. Not sure of what transmission you have, but I know Ford was putting drain plugs in the torque converters at some point in time and that makes maintenance very easy.
Doesn't this engine use 5w-20?
Originally Posted By: DrDusty86
The 6.8L is spec'd for 5w20... Use motor craft 5w20 and sleep well.... 10w30 is well not spec'd for the modulars....you will cause more wear using 10w30's. If ANYONE doubts that look at the UOAs posted on this site
Dusty
How exactly will 10w-30 cause more wear?
The 6.8L is spec'd for 5w20... Use motor craft 5w20 and sleep well.... 10w30 is well not spec'd for the modulars....you will cause more wear using 10w30's. If ANYONE doubts that look at the UOAs posted on this site
Dusty
How exactly will 10w-30 cause more wear?
use 5w20 in that motor that is the oil it calls for...that works well, very well
Your current oil/filter combo is fine. The V10 will run on 5w20, 5w30, 10w30, and 5w40 without a problem.
The 4R100 transmission is the weak link in your towing rig, so don't skimp on the maintenance. At 98k you should also change the gear oil in the rear differential (if you haven't already).
The 4R100 transmission is the weak link in your towing rig, so don't skimp on the maintenance. At 98k you should also change the gear oil in the rear differential (if you haven't already).
You should certainly change all the fluids as others recommended in previous posts if you want that 2000 to live under heavy towing.
I would also change the thermostat from the 195F factory thermostat temperature to a 180F thermostat. This will lower the oil temperature about 10F, boost the oil pressure, and generally keep the engine and accessories from cooking any more than they have to.
This wont have any effect on performance or economy and will not trigger a P0125 code. Your engine will thank you.
I would also change the thermostat from the 195F factory thermostat temperature to a 180F thermostat. This will lower the oil temperature about 10F, boost the oil pressure, and generally keep the engine and accessories from cooking any more than they have to.
This wont have any effect on performance or economy and will not trigger a P0125 code. Your engine will thank you.
OVERKILL
$100 Site Donor 2021
Originally Posted By: DrDusty86
The 6.8L is spec'd for 5w20... Use motor craft 5w20 and sleep well.... 10w30 is well not spec'd for the modulars....you will cause more wear using 10w30's. If ANYONE doubts that look at the UOAs posted on this site
Dusty
Psssst... UOA's aren't meant to be used to compare "wear" between oils....
The 6.8L is spec'd for 5w20... Use motor craft 5w20 and sleep well.... 10w30 is well not spec'd for the modulars....you will cause more wear using 10w30's. If ANYONE doubts that look at the UOAs posted on this site
Dusty
Psssst... UOA's aren't meant to be used to compare "wear" between oils....
use 5w20!!
it runs cooler and flows faster and it works unless you know better than the people that built those engines... forget about gas mileage that is a plus wear is the important thing...I have an engine shop and i use 5w20 bulk conoco in all my modulars because i dont have time to fix my own engines...
it runs cooler and flows faster and it works unless you know better than the people that built those engines... forget about gas mileage that is a plus wear is the important thing...I have an engine shop and i use 5w20 bulk conoco in all my modulars because i dont have time to fix my own engines...
walmart is not so cheap in the oil department
- Status
Similar threads
