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Discussion Starter #1
I bought a sinister diesel oil cooler out of being new and not doing my research until recent. I was wanting to know until I can buy an OEM oil cooler since I’m currently tight on money would it be safe to run the sinister one for a bit or is there anything I can do to clean my current oil cooler to buy me some time for the replacement upgraded oem one? I don’t know my temps yet in the current stock cooler as I haven’t installed my edge monitor and wiring harnesses yet but I already have everything taken apart down to the injectors and I wanted to finish it all before the temps drop and snow hits as I don’t have a garage that my lifted 6.0 will fit in. My truck has been sitting that way for well over a week now as I was waiting on the sinister one to come in along side my STC upgrade.

I thought about just returning it but I’m sure they’d just give me instore credit or some BS which is pointless to me. Just need y'all's opinion on this matter.
 

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As far as the Sinister oil cooler, if it's still boxed, I would think most places would provide you a full refund.
 

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I wouldn't install it.
 

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I went with an aftermarket cooler. Probably a mistake, but I would say that it's hard to justify what the significant difference would be. I believe earlier aftermarket ones used cheaper seals. IMO, the most crucial part of the oil cooler is the seals. If installed improperly and if the seals aren't just right, you can forget it. The main oil cooler cover seal is the most intricate and it needs to be seated in the cover just right to make sure it's not rolled to one side or will pinch once installed. If you don't get that right, it's going to fail, or mix fluid, or leak. The second most important thing is the flush procedure. If you can get as much crap out of the cooling system prior to installing the new unit, the better. Flush the radiator with out the hoses connected. Flush the heater core and the degas bottle with the hoses disconnected. The cheaper coolers look like they could catch more debris easier than the OE unit due to the imperfections of the layered plates of the cooler. The OE unit had a more consistent and uniform pattern when I compared mine. But so far with about 5K miles. My aftermarket cooler is doing fine.
 

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I'm with @bismic and @Spirit. If it's still in the box, return it and get with Mike or one of the guys at Autonation Ford White Bear Lake. They have about as low a price as you'll find on OEM and may be able to expedite shipping. @fordsvtparts
 

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"I don’t know my temps yet in the current stock cooler as I haven’t installed my edge monitor"

Man, check those temps. You might not even need a new oil cooler. I have the original cooler in my truck and my temps are still within specs, actually better since I did a oil cooler backflush.

PS. I didn't read the part about it being torn down!
 

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california deplorable
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the only thing from sinister diesel on my truck is a coolant filter kit and that only because i got it free with four filters
even that i had to use a ridiculous amount of pipe dope and teflon tape both to get it to stop leaking.... i did get it to seal. and it has worked for 5 or 6 years now but i wouldnt trust them for anything. quality is not part of their name. their only claim to fame is pretty blue parts...
which they actually realized and tried to ban others from making blue parts at one point in short...yes they tried to patent ford blue :doh:
in short...i hate those guys
that said if its in the box i would think even they would take it back.
if you are able grab a cooler relocation kit from bulletproof or diesel site just because why go through all that twice when you can make it easy on yourself...
i get time being of the essence i am on borrowed time myself with needing to get a few things done but i gotta have my truck to finish getting firewood i should have finished a month and a half ago :doh:
in short @G8orFord nailed it get ahold of @fordsvtparts he will treat you right and get you what you need at a reasonable price.
all said and done you dont want to have to tear into this again and just get it done right the first time :thumb:
 
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california deplorable
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oh and welcome to the org family
:ORG welcome:
lots of good and experienced folks here dealing with the eccentricities of the 6.0
i still have a ton of stuff i want to do to my truck but with what i have learned here i have had 6 trouble free years in a truck that is an absolute blast to drive and doesn't require dpf or any of that ridiculous bs to function
 

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IMO, put everything back together, and try an oil cooler flush if the temps are bad when you get the edge on. I have spent thousands of dollars on this truck as a result of me trying to fix what is not broken. If I remember right, I've only changed my cooler once, torn down to the injectors means that you're ready to take the intake off and disconnect the EGR to get to the cooler.

IF you decide to install the Sinister oil cooler, you may see a delta in excess of 15 right out of the box. IMO, the "improved" with the wider passages don't give it enough time in the cooler to cool it down. So, if you can accept that when you finally install the cooler and do an awesome job, just to see the delta exceeded, by all means install it. People have said they've contacted Sinister, and they said the excessive delta is fine. I don't know. I do know that the truck may defuel at 254° EOT, so you probably won't see that slick. Towing, I don't know.
 

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And just for the record, not that it means much, but I didn't use the Sinister cooler. I'm using a DieselSite oil cooler from Thoroughbred Diesel.
 

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Discussion Starter #11
Thank you y’all For the great input. Ima just Going to do a system flush and send the sinister cooler back. I’ll keep y’all updated on how everything goes after I finish getting the truck back together this week.
 

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Thank you y’all For the great input. Ima just Going to do a system flush and send the sinister cooler back. I’ll keep y’all updated on how everything goes after I finish getting the truck back together this week.
You're off to good start!

k
 

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When I was dealing closely with a vendor on faulty intake manifold over a coolant leak (casting flaw), he went into full detail about Sinister and their products because I inquired on his opinion.

Vendor- "They are f'ing rip off artists that copy everyone's stuff and make it as cheap as possible.....FK THEM!"

I personally wouldn't buy ANYTHING from that company with their name on it after hearing this from a well respected developer/vendor within the diesel world.

The name SINISTER is most likely an indication of their intentions to ripoff the consumer with shady products.

Just my opinion





the only thing from sinister diesel on my truck is a coolant filter kit and that only because i got it free with four filters
even that i had to use a ridiculous amount of pipe dope and teflon tape both to get it to stop leaking.... i did get it to seal. and it has worked for 5 or 6 years now but i wouldnt trust them for anything. quality is not part of their name. their only claim to fame is pretty blue parts...
which they actually realized and tried to ban others from making blue parts at one point in short...yes they tried to patent ford blue :doh:
in short...i hate those guys
that said if its in the box i would think even they would take it back.
if you are able grab a cooler relocation kit from bulletproof or diesel site just because why go through all that twice when you can make it easy on yourself...
i get time being of the essence i am on borrowed time myself with needing to get a few things done but i gotta have my truck to finish getting firewood i should have finished a month and a half ago :doh:
in short @G8orFord nailed it get ahold of @fordsvtparts he will treat you right and get you what you need at a reasonable price.
all said and done you dont want to have to tear into this again and just get it done right the first time :thumb:
 

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california deplorable
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its not just a name its a business plan
 

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LOL:grin::grin::grin:
 
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