Convenional vs Synthetic

[Dougnsalem]

Can you use diesel oil in a gas engine? Always curious about this....

Good question.


I have used it for years. I just bought a gallon of Delvac 15W-40 at O'Reillys for 13.99. It had a mail in rebate for 7 bucks. So, I paid 1.75 a quart for the stuff. It has zinc in it. Personally, I have never had cam issues, so I don't really worry about that. *That is just my experience, and you guys need to decide for yourself what is safe to use in your motor.* (disclaimer over) Lol In my mind, it's better than the no-name stuff....

I've used Delo, Rotella, and Delvac. Whatever was cheap, (or free). Lol

 

[Paladin]

I personally only use Castrol GTX in our vehicles. Castrol GTX Conventional 5w-30 in my 1985 C30 as with a full roller motor I am not concerned with zinc additives or ppm, Castrol GTX High Mileage Synthetic Blend 5w-30 in our 2000 Suburban, and Castrol GTX Conventional 10w-30 in the wife's 1966 Mustang. Have used Castrol for many years now and it has never let me down, I attribute that in part because I change oil and filter every 3000 miles whether it needs it or not!! I'm just old school that way! I believe in preventive maintenance and taking care of our vehicles as we rely on them to take care of us! When I find something that works well for me I stick with it. Sorry for the rambling but am in the process of getting wasted tonight as tomorrow is my B-day, Ya only turn 62 once!

 

[Frankenchevy]

they sell 3 gallon boxes of delo 15w-40 at Costco. I stock up when its on sale for $26. my excursion takes 14 quarts per oil change, lol. I also use the Delo in my dirt bikes with wet clutches because it is a good oil without friction modifiers.

I was using mobil 10w-30 synthetic from Costco in the square. they do six quart boxes of that stuff for $23 on sale. I might do 5w-30 on the new motor in the winter.

supposed to get more mpg with a lighter synthetic, as long as your rings still seal well.

 

[Honky Kong jr]

I personally only use Castrol GTX in our vehicles. Castrol GTX Conventional 5w-30 in my 1985 C30 as with a full roller motor I am not concerned with zinc additives or ppm, Castrol GTX High Mileage Synthetic Blend 5w-30 in our 2000 Suburban, and Castrol GTX Conventional 10w-30 in the wife's 1966 Mustang. Have used Castrol for many years now and it has never let me down, I attribute that in part because I change oil and filter every 3000 miles whether it needs it or not!! I'm just old school that way! I believe in preventive maintenance and taking care of our vehicles as we rely on them to take care of us! When I find something that works well for me I stick with it. Sorry for the rambling but am in the process of getting wasted tonight as tomorrow is my B-day, Ya only turn 62 once!

Happy Birthday ole man!!!!

 

[Iowan]

Good question.


I have used it for years. I just bought a gallon of Delvac 15W-40 at O'Reillys for 13.99. It had a mail in rebate for 7 bucks. So, I paid 1.75 a quart for the stuff. It has zinc in it. Personally, I have never had cam issues, so I don't really worry about that. *That is just my experience, and you guys need to decide for yourself what is safe to use in your motor.* (disclaimer over) Lol In my mind, it's better than the no-name stuff....

I've used Delo, Rotella, and Delvac. Whatever was cheap, (or free). Lol

I read on a hotrod forum Rotella took down on the zppd quantity. I'll probably ad a quart of Comp zinc additive just to make the engine happy.

 

[CSFJ]

I'd add 2 quarts, you can never have too much protection.

 

[Big Chip]

I'd add 2 quarts, you can never have too much protection.

So that’s like wearing 2 condoms AND a paper bag??


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[idahovette]

Does the "new" Delo 400 still have the zinc in it? Used to but with all the new regs with Diesel engines you never know.

 

[Frankenchevy]

Does the "new" Delo 400 still have the zinc in it? Used to but with all the new regs with Diesel engines you never know.

I just ran out of my "old label" delo. I have some boxes of the new stuff with a red cap. I did notice that the service rating was uprated to some new standard. it's now CK-4/SN. I'm not even going to pretend like I know anything about what all of if means so here is a picture of one of the new gallon jugs they sell as a 3 pack at Costco. someone here smarter than myself would probably know.

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[idahovette]

How come "new advanced technology" usually means they have totally screwed it up?

 

[Honky Kong jr]

So that’s like wearing 2 condoms AND a paper bag??


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And unplugging the alarm clock..... them numbers are pretty bright

 

[morrow07]

I run Gibbs Driven Hot Rod 10-40 in the 77' with the 406, and the 89' with the TBI

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[bedwards]

I've run diesel oil for years in my older gas engines. It has higher detergent levels and higher zinc than today's oil for gasoline engines.

 

[Iowan]

I'd add 2 quarts, you can never have too much protection.

Even with a factory roller cam?

 

[Snoots]

I won't use syn in the motor, but I use it in the rear end.

I'm a sick bastard. You should carefully read what you are posting else I should make a lewd comeback statement.