Hi,

I'm sure that this is a hot topic, but I have a very specific question related to it.

When I first bought my Stang this last summer (it was used), it was running conv. oil. I got that drained ASAP and started using Mobil 1 full synthetic. It has ran fine ever since with no problems.

I know that Royal Purple is very highly regarded among Mustang enthusiasts. I am doing another oil change in a month or so. Is there any significant difference between Mobil 1 and RP? Will my MPG improve? Will my engine life increase? Is there an oil even better than RP that would be significantly better than Mobil 1?

ALSO, I bought a DENSO oil filter and was planning to use it at my next oil change. Has anyone had problems with DENSO oil filters? Is there any noticeable difference between DENSO and RP or K&N oil filters? Finally, is there another oil filter brand that I didn't mention that would be noticeably better than DENSO?

Jake

There will be lots of opinions on what oil and filters are best and how often to change the oil. Check out 'Bob is The Oil Guy' web site for lots of reading to satisfy your questions. I use what ever brand name synthetic oil I can find on sale, use good filters (anything but Fram) and change it myself every 5000. Some say that is overkill but I do it myself and that is my justification to do it more often than not. I don't track the Mustang and drive it like it's mine - not a rental lol. I also "over change" the tranny oil and rear diff too.
https://www.bobistheoilguy.com/forum...s.php?ubb=cfrm

Use a good quality oil and filter at your current oil change interval and you'll be fine.

I use Motorcraft filter and SynBlend without any problems.

I've heard nothing but good comments about Brad Penn Oil. I'm currently using 15W-40 in my 68 Mustang with a 331 stroker and roller rocker. It's a synthetic blend oil with lots of ZDDP additives. ZDDP additives are a must with flat tappet lifters. The most important thing to do is use a good quality filter and oil and change it at least once a year or 3000 miles.

Here is something else to consider, especially for cast iron engines. Some people might consider it a gimmick, but the logic seems sound. I attached a Made in USA FilterMAG SS365 Large for 3.5 – 4 inches diameter, oil filter magnet to the oil filter on my 260 V-8. This thing uses super-strong magnets with a 160-pound pull to filter out iron and steel particles as small as one micron.



“FILTERMAG™ powerful rare-earth magnets trap and hold wear-inducing metal particles smaller than 40-microns down to less than 1-micron that the filter element alone cannot stop. The strong magnetic force holds FilterMAG to the oil filter for an easy 30-second installation."





See: FilterMAG SS365: SS FilterMag Fits 3.50"-4.00" diameter | JEGS

Mobil 1 synthetic and a quality filter will do you just fine. Unless this engine was supercharged or turbo charged, I wouldn't worry about the fancy oils.

+1 on Bob the oil guy. It's a good read for those into that one subject.