I've been topping off with rotella 15W-40 non-synthetic since I purchased Delilah in June. Going to do an oil change this weekend or next. Would a change to synthetic be worth while?
I certainly don't know enough to say if it's worth it, but Slowis does tend to run well with it, and I haven't noticed any downside other than price. Given that the recommendation came from a very thorough mechanic (Eizo at Apex Auto in Burien) who has lots of experience with these engines and no incentive to sell me the oil, I trust his recommendation. Given all the things we're all constantly doing to these old vans, it's a relatively small premium to pay for the most vital fluid, IMHO. If you don't know when your fuel filter was last changed, I'd recommend changing that, too. Mine definitely runs better with a new one.
10:4. I"ll be changing fuel filter as well when I do the oil/filter change and new air filter. Cheers!
No, you can switch back and forth... the idea that you can't is a myth.
I run rotella T6 5-40... but IMO full synthetic is just a waste of money if you are going to be doing 3k oil changes.
Do you think it would improve quality of how it runs, especially in winter?
Do you have a diesel or a gasser? Would you recommend 15-40 full synthetic for a diesel l300? Or are you supposed to adjust the weight differently?
Winter is why I switched to full synthetic. It stays fluid to much lower temperatures. I'm in Canada, just north of Ottawa and it gets down to the the -30s in January.
Diesel, which is why I went full synthetic; to get the 5w winter weight... it helps with cold starts.
