Running a high quality oil and oil filter will help prevent any oil consumption issues too. A high quality oil not only protects but also cleans deposits.
I only use top tier fuel.
I must add that I feel Chevron is one of the best. In my area there are Shells and Valeros too and I've used any of the 3 depending on where I was. Never really paid attention to it, cuz they'll all top teir, until I started getting code P0138 & P0139 after roughly 100 miles after filling up, I try to fill up when I have 1/2 tank and never let it go below 1/4 tank. I gotta add that I have PCDs installed with the de foulers, so this wouldn't have been noticed if I had the factory pre cats on. Anyway, once I fill up the CEL light would shut off shortly after. Realizing I was near to doing a tune up anyway I didn't pay any mind to it. Parts were ordered and I was just waiting till they arrived and I had a free weekend. Ok now, I filled up at Chevron and the light never came on, needed gas again and I was near Chevron so filled her up there again, still no CEL. Next I filled up at Shell or Valero, I can't remember, but I'm sure it wasn't a Chevron, also there's still alil over 1/4 tank of Chevron fuel still in the tank, CEL turned on after roughly 100 miles again. So now I'm thinking "no way". Does Chevron really burn that much cleaner? So the next fill up I made it a point to kinda go outta my way to hit a Chevron. Mind you it wasn't the normal Chevron I go to, to further test my theory, and sure as $h!t the CEL never came on. So I'll be going to Chevron as often as possible from now on.
After all this, I've never encountered any oil consumption and I'm alil over 100k miles now. Did the tune up and as expected the CEL no longer comes on at all ever. Car still runs like a champ!
I used to like Chevron because they used to give me Save On(a BC supermarket chain) Points, but they stopped doing that, and their 91 is still ethanol-stained, so I stopped going there. I am tempted to try their 94 now(with the RX-8 as the premium is mandatory), however, which is ethanol-free. Chevron is the only gas station in BC, Canada that offers a 94 octane option. All the other ones top out at 91.
As for Techron... Those bottles of Techron seems to be useless, but the long term use of Chevron gas containing Techron may make a difference.
Shell is also pretty good IMO. That's where I go for my Accord, even though it's a bit out of the way.
I plan on replacing my PCV valve (after 102,000 miles) but, you know what, it seems to be impossible to find a HONDA DEALER that has one in stock. Had my B14 service performed Monday. While there, I went to the parts desk to get my spark plugs and a PCV valve. The guy said they would need to order the valve. Same thing at the other Honda dealer in town. WTF. Can't even find it in the Honda ePartsStore. Also I'm sure you guys who have looked at that website have noticed the Honda parts drawings are pathetic, quality-wise.
Not sure about Honda dealerships, but the Mazda one(now that I have an RX-8) told me that they only stock things if more than 3 of the same item were used in a 6-month period. Not that many people worry about PCV valves, so I don't expect dealerships to stock them. Heck, the Mazda one doesn't even stock the brake pads or the plastic clips holding the trunk insulator in place for my RX-8!
Most of the generic drawing for parts are bad. You haven't seen the ones for my Corolla. And at least Honda uses a name that makes sense for the part. My Corolla had a name that makes no sense for a gasket for the PCV or oil drain plug, I can't remember.
You don't need to get one from the stealership. I bought two of them for our Accords off either Amazon or rockauto. They are the exact same thing as the OEM part. A PCV valve is nothing more than a check valve. The innards are a spring and a ball. You probably don't even need to buy a new one. Just blow some carb cleaner through your old one and you're good to go.
In the States, this makes sense. On Vancouver Island of Canada, not so much. Shipping is expensive, takes forever. Stealership is the best place to grab parts for me.
Instead of using Marvel Mystery Oil....I'm a FIRM believer in a product called Kreen.
You have to special order it online (and check a box that says you're a business, but it's no big deal).....
You use it in your oil and in your gas. It works wonders.
Normally I don't put anything in the Accord. At most, I dump a 1/3 can of Seafoam in my Accord once a year. Using Top Tier gas on a regular basis is the best practice, as mentioned before.
Some additives can lower octane ratings as well; too much of them and you will cause knocks, which is very bad for the engine. How much of this product do you use?
On the note of ordering something as a business, I somewhat have the same problem with my RX-8. A product called Idemitsu Premix is popular among rotary car owners, as rotary engines are designed to inject and burn oil, and putting something similar to 2-stroke oil in your gas can help with the lubrication of seals. The problem is that you have to order a huge quantity of this oil for Idemitsu to ship to you. I had to get them from an eBay seller in the States, and the import fee isn't pretty. Is there a minimum quantity you have to order(since you are ordering as a business)?