Welder Dave
Senior Member
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?