1 Oil for several vehicles?

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Feb 27, 2026
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So I have several vehicles and more oil brands and types than I care to have. I was looking at the supertech synthetic diesel 15w40. You guys think this would be ok to run in my 2006 f350 6.0 diesel, 2003 vw tdi, classic bronco and mustang, and small equipment? Id love to buy 1 oil and stick to it. Looks like the additive package would be good for diesels and flat tappet cams.
 
So I have several vehicles and more oil brands and types than I care to have. I was looking at the supertech synthetic diesel 15w40. You guys think this would be ok to run in my 2006 f350 6.0 diesel, 2003 vw tdi, classic bronco and mustang, and small equipment? Id love to buy 1 oil and stick to it. Looks like the additive package would be good for diesels and flat tappet cams.
If you must stick to one oil pick an HDEO since you have your 6.0L.
 
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Royal Purple 0w-40 Euro Formula would be a fine choice considering the variety of vehicles and has a wide spectrum of temperature uses, and has pao in it. but by all rights you are best served by using a api rated 5w-30 (Pennzoil Platinum Ultra for a example) for the cars (gas) and a regular diesel engine oil for the truck, perhaps a Shell Rotella 5w-40. for a example, many choices to think over,
 
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Royal Purple 0w-40 Euro Formula would be a fine choice considering the variety of vehicles and has a wide spectrum of temperature uses, and has pao in it. but by all rights you are best served by using a api rated 5w-30 (Pennzoil Platinum Ultra for a example) for the cars (gas) and a regular diesel engine oil for the truck, perhaps a Shell Rotella 5w-40. for a example, many choices to think over,
My vote for the HDEO goes to Mobil Delvac 1 0W-40 ESP💪
 
if they don't have to start below 10f sure, Supertech Full Synthetic 15w-40 would work fine in everything. What years are the other fords.
Agreed. If you don’t want to have to worry about temp as much, use full synthetic affordable, yet high quality 5W-40 HDEO, like Rotella T6. It starts safely down to -20F/-30C, but I’d use my engine block heater anytime it’s below freezing anyways.
 
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So I have several vehicles and more oil brands and types than I care to have. I was looking at the supertech synthetic diesel 15w40. You guys think this would be ok to run in my 2006 f350 6.0 diesel, 2003 vw tdi, classic bronco and mustang, and small equipment? Id love to buy 1 oil and stick to it. Looks like the additive package would be good for diesels and flat tappet cams.
I’d love to see this classic bronco you speak of. Times running out, but I always wanted to find a mint condition, or bring one back.
 
I’d love to see this classic bronco you speak of. Times running out, but I always wanted to find a mint condition, or bring one back.

I’d love to see this classic bronco you speak of. Times running out, but I always wanted to find a mint condition, or bring one back.

20260122_160641.webp
 
T6 is known not to be a great oil for the 6.0
not a great oil anymore
That's pure nonsense. T6 is a good, off the shelf, oil period including using it in the 6.0L.
Isnt the supertech hdeo? Its for diesels
Here's a list of HDEO's. Yes, that is an HDEO which is required for your 6.0L.
 
That's pure nonsense. T6 is a good, off the shelf, oil period.

Here's a list of HDEO's. Yes, that is an HDEO which is required for your 6.0L.
I was told T6 changed their additive package and it is worse. Also some manufacturers of 6.0 injectors won't warranty them if t6 is used thats why I stay away from it. I do use it in my classics though
 
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