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diesel oil in gasoline engines #5223079 09/26/19 01:06 PM
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HyundaiAbuser Online Content OP
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Are there any benefits/downsides to running diesel oil in a gasoline engine? Currently looking at a 5 qt jug of 15w40 supertech for $10 in a beat up old el camino.


03 Hyundai Tiburon:
Castrol Edge 0w40
Redline MT90
94 Mazda B4000
Supertech 5w30 Full Synthetic
Valvoline Dex/Merc
Re: diesel oil in gasoline engines [Re: HyundaiAbuser] #5223095 09/26/19 01:17 PM
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kschachn Offline
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It's API SN, correct?


1994 BMW 530i, 246K
1996 Honda Accord, 280K
1999 Toyota Sienna, 420K
2000 Toyota ECHO, 281K
Re: diesel oil in gasoline engines [Re: HyundaiAbuser] #5223100 09/26/19 01:21 PM
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Capt Offline
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You may notice slightly more fuel consumption, most certainly less oil consumption. The add pack is usually more robust, higher tbn, more anti wear additives & detergents. My 1st choice for an old beater would be 15w-40HD.

Oh if it has a high level of Zinc or phos? it may foul up the cats (assuming it has cats & burns oil)

Last edited by Capt; 09/26/19 01:27 PM.
Re: diesel oil in gasoline engines [Re: HyundaiAbuser] #5223120 09/26/19 01:43 PM
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Audios Offline
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Should work well, go for it.


2002 VW Golf TDI-T5 10/30
2007 Mercedes GL320 CDI- M1 0/30 ESP
2005 BMW M3 BMW Twin Power 10/60
2003 BMW M5-Fuchs 5/40
1998 BMW M3/4/5 Fuchs 5/40
Re: diesel oil in gasoline engines [Re: Audios] #5223132 09/26/19 01:53 PM
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Lolvoguy Online Shocked
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Originally Posted by Audios
Should work well, go for it.

+1
I'm running Rotella T4 15w40 (also rated for diesel vehicles) in my oldie and she seems to like it.
Never had oil consumption issues, so no need to worry about the cat.


06 Lexus IS350- Wife
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Say "no" to Turbo!
Re: diesel oil in gasoline engines [Re: HyundaiAbuser] #5223144 09/26/19 02:14 PM
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nthach Offline
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Go for it. 15W-40 is my favored grade for older European engines and it's much better than a 20W-50.

Re: diesel oil in gasoline engines [Re: HyundaiAbuser] #5223150 09/26/19 02:23 PM
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BigCahuna Online Content
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Harley recommends using diesel oil if your bike is low on oil, and their brand of oil isn't available. And for winter use they say to use 10/40wt when the temps are below 40f. So again 15/40 would work there also.,,,

Re: diesel oil in gasoline engines [Re: HyundaiAbuser] #5223157 09/26/19 02:27 PM
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MParr Offline
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You will be fine running it. You may notice your fuel mileage going down a little. If you live where you experience pretty cold winters, you can switch to Super Tech European 5W40.


2019 VW Tiguan SE Now: Mobil 1 ESP 5W30 & OE VW/Mann
2017 Ford Escape SE 2.0T Now: Motorcraft 5W30 SynBlend & NAPA Gold 1348
Re: diesel oil in gasoline engines [Re: HyundaiAbuser] #5223311 09/26/19 06:16 PM
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toneydoc Offline
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How beat up is the el camino?
I really love the el camino
How much do you want for her?


1994 Jeep 165k NextGen 10w30
2014 Camry 42k Castrol Magnatec 0w20
2018 Jeep Cherokee 6k Pennzoil Platinum 5w30
2014 HD Ultra 50k Mobil1 15w50
Re: diesel oil in gasoline engines [Re: HyundaiAbuser] #5223314 09/26/19 06:20 PM
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This question is often asked. Officially motor oils for gasoline engines are limited in the USA by The American Petroleum Institute (API) to 800 ppm for Zinc and phosphorus. They feel anything higher is damaging to catalytic convertors. However, many Bitoggers like Zinc and phosphorus so they like using oils that are meant for Diesel engines. Some say if it doesn’t burn oil it’s OK, but that is not the position of the API. However, there are no API cops peeking into your garage, so I guess you can use what you want. smile

Last edited by Snagglefoot; 09/26/19 06:26 PM.

If you want the job done right......do it yourself.
Re: diesel oil in gasoline engines [Re: HyundaiAbuser] #5223396 09/26/19 08:08 PM
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CT8 Offline
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If the 15W works for your starting temps the oil will work great.


2015 F150 2.7
2018 F350 6.2
Re: diesel oil in gasoline engines [Re: HyundaiAbuser] #5223414 09/26/19 08:34 PM
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StarCaller Offline
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Quote
Officially motor oils for gasoline engines are limited in the USA by The American Petroleum Institute (API) to 800 ppm for Zinc and phosphorus.


check this one here
mobil1 data sheet 06-2019

Re: diesel oil in gasoline engines [Re: HyundaiAbuser] #5223421 09/26/19 08:40 PM
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I run Rotella T 15w40 in my classics. There are other (probably better) flat tappet oils out there.
If you are running stock valve spring rates, any 10w30 is probably fine.
If it is an original or pumped engine, I would use a specific oil for that engine.


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2001 Tundra Access Cab, 1998 Accord LX, 1968 Corvette L36 Roadster, 1965 Olds 4-4-2
Re: diesel oil in gasoline engines [Re: CT8] #5223457 09/26/19 09:06 PM
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bbhero Online Content
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Originally Posted by CT8
If the 15W works for your starting temps the oil will work great.



True CT8...

By the way... Way cold up your way I believe.... For the next week or so it will be quite cold in your area. A 15w might be a little thick in your area come Saturday am smile


Nissan Altima 3.5 Coupe
Cam2 Dexos1 Gen 2 5w30 Wix 57356 Oil filter
"Treat your family like your friends and treat your friends like your family."
Re: diesel oil in gasoline engines [Re: HyundaiAbuser] #5223539 09/26/19 11:09 PM
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Rotella T-6 is diesel rated and it's 5W-40.


There's no such thing as:
Too big of a battery,
Too large of a gas tank,
or too loud of a horn,
or too bright headlights.
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