Super Tech VS delo400

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Jan 8, 2005 | 10:38 PM

Dustin_86

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Super Tech VS delo400

I was thinking about switching from Castrol GTX 10w30 to Super Tech FULL synthetic 10w-30-How good is this stuff.How does it compare to castrol GTX?
How does the tech syn compare to Delo 15-40 in the summer?is it bad to switch to castrol GTX from delo during the winter and then back to delo because I can't find 10w-30 delo.
The truck this concerns is my 86 F150 EFI 302 ext cab lB that does NOT use any oil but seeps out a little but no leaks.In other words 5K changes and the oil level is still RIGHT on the full mark

Jan 9, 2005 | 11:32 AM

seldont

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If you are using Castrol and doing 5000 miles changes woith no consumption what are you trying to accomplish by switching?? Personally I would either use a good 10w30 (Chevron,Havoline,Motorcraft,Pennzoil,Castrol) or just use the Delo instead of using the Super Tech synthetic. It is most likely a group III synthetic at best anyway. If you really want to use a full synthetic just go buy the Mobil1 at Wally World. My .02 ...........

Jan 9, 2005 | 06:14 PM

FERacing66

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From: Jackassville

According to Flash, wear metals go up with syns in cold weather and cold starting conditions. Something to think about. I myself run Mystic, a little hard to get but its cheap and is disel rated, disel rated oils are far supeior to SL rated oils becasue they have more detergents and a better additive package.

Jan 9, 2005 | 10:22 PM

ford390gashog

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From: Brentwood,CA

yes but most diesel oils are dual rated cl-4 and sl rotella is a good oil too

Mar 27, 2005 | 02:09 AM

kopfenjager

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From: In the woods of Oregon

isn't a clas III syn still better than a coventional dino oil?

Mar 27, 2005 | 07:56 AM

MBDiagMan

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From: NE Texas

For your earlier engine, IF you are not in a cold climate, I think Delo 15 40 is a great choice. I've run it in everything on my place that does not have roller lifters for about 20 years with fabulous success.

Best of luck,
Doc

Mar 27, 2005 | 09:45 AM

BlueRanger94

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Why change if your 86 is running so well on what you have been feeding it. The only change I would make is trying Castrol high mileage oil to see if it lessens the slight seepage.