Oil Question...Again

"The Norm" · August 11, 2011, 09:37:10 AM

I called my local oil distributor in search of 40WT oil and they recommended Castrol Assuron 40WT specifically for a DD. It is API CF-2 and has an ash content of .80. Would this be OK to use or should I stick to the Shell Rotella or Delo 100? It is $12.70/gallon. Just wanted to get some feedback before I purchase any.

Thanks !!!

luvrbus · August 11, 2011, 09:59:18 AM

You are better off with anything besides the Rotella in a 2 stroke lol

good luck

"The Norm" · August 20, 2011, 05:20:17 AM

We'll I did the oil change and we took the bus on a short 200 mile trip. We used to leak oil no matter what (I figured typical Detroit). We arrived at our weekend destination point and set up camp. After a couple of hour I checked under the bus to see if the oil helped the leaks,,,and there were none. WOW!! The PO most have used 15-40wt. Thank you bus gurus for the threads that said to stick to straight 40wt! What a difference!

belfert · August 20, 2011, 01:50:35 PM

I would recommend anyone that buys a used bus to change the oil right away. You never know how many miles or month/years is on the oil. For a 2 stroke you have no idea if the right weight oil was used. I had the oil in my bus changed before I drove it 1,400 miles home.

It really isn't that hard to find 40 wt CF-2 oil. Around here Mills Fleet Farm has a house brand made by one of the big oil guys right on the shelf. If I had a 2 stroke I would run that before 15W40.

wal1809 · August 20, 2011, 02:14:20 PM

Mine used to smoke to beat all and leak a lot of oil. With the right stuff mine slowed both leaks and smoke.

Jerry32 · August 20, 2011, 03:14:47 PM

Yes the same here the bus had been on 15-40 and when I got it in SC I had williams chang to detroit 40 wt before the roadtrip home . now this thing hardly uses any oil at all. I used up all the detroit oil on achange and had to get Delo now Jerry

luvrbus · August 20, 2011, 03:20:45 PM

Jerry the DD brand oil is Mobil Delvac 1240 best oil you can use in a 2 stroke fwiw

good luck

Van · August 20, 2011, 03:35:57 PM

Clifford, It is getting so hot, I'm thinking of the 50 wt now lol. It was so hot one summer that straight STP ran out of the can (remember the cans?)

TomC · August 21, 2011, 09:19:08 AM

As a matter of fact, Detroit Diesel recommends sae50 weight in their 149 series used in hot mining operations. If you have a block heater, 50 weight wouldn't be bad for very hot weather. Good Luck, TomC

luvrbus · August 21, 2011, 09:34:25 AM

A matter of fact DD recommends 50w for any 2 stroke with ambient temps over 100F or water temp at 200F

good luck