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![PP2000](themes/aaAle/images/interface/profile-pic-placeholder.47cf740a.png)
I have 3 part containers of new oil which haven’t been used up over the years. I’m due now for an oil change & would like to know if I can use these together thanks. They are Valvoline diesel extra 15w 40, Penrite diesel HD 15w 40, and Mobil Delvac MX 15w 40.
Thanks in advance.
![Anon](/assets/aa/aa-avatar.png?m=1466990309)
Hi there,
Even though the oil classification is the same, I have no solid information to suggest it is harmful to blend brands and ages of oil, some opinions says it's ok and some say don't- there may be no right or wrong answer to this one. I would say though that the older the vehicle the less likely there will be any issue as long as the correct oil classification as per manufactures recommendation is used.
![PP2000](themes/aaAle/images/interface/profile-pic-placeholder.47cf740a.png)
Thanks for your reply, much appreciated