Rotella Oil
 

Hi all

I recall reading on here that Rotella 15 40 was a good oil for our flatheads.

So I was in the auto store today and went over to the Oil area and picked up a bottle. It read it's for diesel motors.

So did I mis-read the post or is Rotella 15 40 diesel oil good in a flatty?:D

Re: Rotella Oil
 

In my opinion, no. you did not misread. I use it in My '51 Merc. with a flathead, I also use it in my '30 coupe with a Y-block. it is a very good oil.

Re: Rotella Oil
 

Rotella 15w-40 is used in diesel engines and your flathead V8 gasoline engine.

Re: Rotella Oil
 

Use it both my flatheads and model a. Good choice.

Re: Rotella Oil
 

Use in my cars, long talks on here about Zinc or lack of Zinc. Search the Forum and you decide.

Re: Rotella Oil
 

Excellent thanks Gentelmen!!!

Re: Rotella Oil
 

We use it in all our fleet maintenance of semi's.

Re: Rotella Oil
 

It's made by Shell, and I use it in my Flatheads and Indian motocycle.

Re: Rotella Oil
 

I have been using it my flathead for 12 years.

Re: Rotella Oil
 

I've used it in various V8 engines up to 1972 . No problems ....

Re: Rotella Oil
 

As stated, lots of info already posted. I found this interesting too.
http://speedtalk.com/forum/viewtopic.php?f=1&t=35836

Re: Rotella Oil
 

I do not know this positively, but i was told by a mechanic years ago that you could use diesel motor oil in a gasoline engine but you could not use gasoline engine oil in a diesel.

Re: Rotella Oil
 

I use it in my old stuff and high mileage late model stuff

Re: Rotella Oil
 

I use Rotella oil in my 1940 Coupe per the recommendation of a local flathead specialist.
This week I carried my 1966 Mustang with 289 to Ford Dealer for free oil change that I won as a prize in a recent Mustang Car Show. The dealer recommended Rotella 15W/40
for my car. I agreed. Will see how it performs in the Mustang.

Re: Rotella Oil
 

I use Rotella T 15/40 in both of my YBlocks. One has gone from coast to coast twice. No problems. I wish I could say the same for the rear main seal.

ZDDP right up there.

Re: Rotella Oil
 

Guys,a word of caution here about using a modern high detergent oil in older engines that were designed to use non-detergent oil. Namely,DO NOT use high-detergent oil in a older engine that has has ran non-detergent oil all it's life and has never been rebuilt. If you do,it will bust loose all the sludge and clog up your filter and your oil passages. The result will be your oil pressure will drop to zero. If you are lucky,you will notice this before bad things happen and will stop the engine,drain it,remove and replace the oil filter,fill the engine with 30 or 40 wt non-detergent oil,and then run it for a while at home until you see the oil pressure start to drop again,and then replace the oil filter again and add a quart of non-detergent 30 or 40 wt oil. Repeat as necessary.

By all means use it if you have a engine that has been hot tanked and rebuilt. It's much better oil.

Re: Rotella Oil
 

I wouldn't put non detergent oil in any motor........

Re: Rotella Oil
 

Read this before wasting money on Rotella. I use Valvoline
Cummins Blue in all of my diesels and some off the flatheads.
This is much better than Rotella I like the Molly as well as the
Zink. G.M.

Re: Rotella Oil
 

I had problems uploading this file but I think I got it. G.M.

Re: Rotella Oil
 

Great article! Thanks for sharing it.