Royal Purple
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Royal Purple
Looking for any feedback on Royal Purple 15w40 Diesel oil. Thinking of using it for the first time in my 2005 6.0L, but not sure if its worth the extra $$$. Side note- I live in Southwest Florida and deal with pretty excessive heat year round.
Any opinions and info would be appreciated. Thanks
Any opinions and info would be appreciated. Thanks
Lead Driver
Joined: Jul 2004
Posts: 6,950
Likes: 510
From: Foothills, CA
Looking for any feedback on Royal Purple 15w40 Diesel oil. Thinking of using it for the first time in my 2005 6.0L, but not sure if its worth the extra $$$. Side note- I live in Southwest Florida and deal with pretty excessive heat year round.
Any opinions and info would be appreciated. Thanks
Any opinions and info would be appreciated. Thanks
I've not heard anything bad or good on it, but not sure it gives you anything for the $s over many other oils available...
Hotshot
Joined: Jul 2005
Posts: 13,834
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From: Middle Tn.
5W40 can be used year round.
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Senior User
Joined: Jan 2015
Posts: 199
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i also live in fl.. another option, mobil delvac 15-40 diesel oil.. $10 gal at walmart.. meets all specs ford calls for, been running it for the past 100k or so .. 336k on my truck. change every 5k .. you just opened up a can of worms 
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Lead Driver
Joined: May 2014
Posts: 6,545
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From: Virginia Beach VA
If you start to notice rough running at first start of the day and it smooths out after it warms up... do not hesitate to switch to right guard..... I mean full synthetic 5w-40. It's better at fighting stiction.
FTE Leadership Emeritus
Joined: Sep 2003
Posts: 12,242
Likes: 758
From: Houston, Texas
I'm running 5w40 Schaeffers in mine, but was advised by a rep that I can run Schaeffers 15w40 full syn up to 7500 miles, so I'll be running that next oil change.
Worked wonders for my stiction, engine runs nice and smooth hot or cold.
Worked wonders for my stiction, engine runs nice and smooth hot or cold.
Postmaster
Joined: Aug 2015
Posts: 3,910
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From: NW IA
I've toyed with running Schaeffers too, it's a true synthetic but not sure I can justify the price difference.
Lead Driver
Joined: Jul 2004
Posts: 6,950
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From: Foothills, CA
Are you going to check UOA, like after you get past 5 or 6K?
FTE Leadership Emeritus
Joined: Sep 2003
Posts: 12,242
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From: Houston, Texas
Originally Posted by navistarnut
I've toyed with running Schaeffers too, it's a true synthetic but not sure I can justify the price difference.
Originally Posted by diesel_dan
Are you going to check UOA, like after you get past 5 or 6K?