Oil recommendations- no flaming please
 

Engine builder wants me to use straight 30w (dino oil) in my engines? Which do you folks recommend?

Wannabe

My builder told me straight 40. I use NAPA with the gold filters.

Powerplay- I got the wix filters , I just don't know if I should use Rotella t1, or Delvac or a straight 30w Penzoil. The Merc oil is sythetic so 25w-40 so I could use that.

Are you saying use Napa 30w oil?

Wannabe

Mobil delvac super 1300 15w40 Made for Diesel / super charged or turbo gas engines.

Rockfish- I have roller cams - that Delvac is good to use? My temps run low no thermostats in the engines.

Wannabe

Ask your builder. Mine told me to use the napa 40. No synthetic. A few of my buddies have bigger power than me and it's all we use.

Napa 30w it is - actually it's Valvoline 30 too.

Wannabe

Good deal! Maybe see ya out this summer?

Factory recommended straight 40w. I ran Mobil 15-50 in my Stinger. Zero measurable wear after 350 hours.

Wan,
If your engine builder said to use straight 30, why would you even dream of using something else ??????? As far as brand goes, I would ask him which he prefers and use that without question.

Just my opinion,

Bill Koustenis
Advanced Automotive Machine
Waldorf Md

my builder told me to use penzoil 25-50. so I did it and they ran well !

Valvoline straight 40 wt racing oil all I have ever used. My engines are always perfect at refresh PERIOD.....

Might want to look at the bravo shops neo oil, I've heard there oil is awesome, my next oil Change will be done with it, there drive oil is also producing great results!

i used the neo products often and they were superior in all respects to everything else. the problem was getting them ... almost as good were the mobil 1 synthetics which i could buy anywhere easily. their delvac product line is teriffic and what i run now in everything but if i had access to the neo's i would still use them. they are quite amazing.

My 2 cents! I have reading these oil posts for many years, what I have gleaned is multi grades gives pressure a tad quicker and has good cling due to the polymers. Dino is better for break in syn is to slick, being so slick rollers can stick and develop flat spots also it takes longer for rings to seat. On my builds I do run straight dino for the first 5 then 10 then 25 hour changes, then I switch to 20-50 at 75 hours I go over to syn. I have been running Spectro 20-50 since, but the Merc syn has been doing fine for many.

I live in TX, hot weather, and hot water, often wondered how muck that impact oil,
Not sure where you live But that may need to be brought into factor.