Probably been asked a zillion times but what's a good 15W-40 oil to use in older engines up to 1994. I need to change oil in my 65 Perkins, 86 Cat and 94 Kubota. Rotella T triple protection seems to be everywhere. Best price is $63 for 18.9L at Walmart. Chevron Delo 400 SDE is on sale for $70 for 18.9L. I've read some people don't like the Rotella T and the Delo is better but I've also read the opposite. Mobil Delvac 1300 is another one I might be able to find locally or would the Walmart Supertech oil be worth considering?
I got to the point where I go by price and the SAE and API specs on the cans. Unless you buy some cheap no name brand, it's all more than adequate when changed per machine manufacturer's specs.
I think the Supertech. Is the most appropriate for older engines.
I've had no problems with rotella so far. its readily available and they still make monograde for older equipment the last time I checked although the monograde may not be in stock and would have to be ordered
I use 15W-40. The engines are older, about 4000hrs. on the Perkins and Kubota and 1500 on the rebuilt Cat. Still want them to last so want a decent oil.
Believe it or not. Walmart's supertech line has been reviewed many times . Often times the results leave the competition wanting. I am always surprised when I read that cuz I have used either delo or rotella my whole life in everything even my mowers. I know supertech is rebranded stuff of unknown origin, but it's good stuff. On paper.
We tend to go for a 20W50 in "older" generation diesel engines
I've been running Rotella 15-40 in my 9n & 850 Fords for 25+ years now..... Ed
rotella t in everything around here .including the pass.vehicles