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You've never seen 91 octane? https://www.fueleconomy.gov/feg/octane.shtml Ethanol free around my area at various stations is all either 90 or 91. Many car manuals will say premium 91+ or reduced performance may be experienced aka knock sensor pulls timing.

Ok guess my car happened over 4 tanks of the exact same driving to drop 25% mpg. Then oddly enough gain it back ever since. You talk about science yet mention nothing to back that up. Besides likely being someone on the selling corn end of ethanol. A stock flex fuel car does not gain mpg or...

High content ethanol is incompatible with most cleaner additives used in gasoline. That's why flex/e85 has none currently at the pumps, at best you will just be wasting money. E85 is a waste of time anyhow unless your getting it free the mpg drop offsets the now minor price difference. Now if...

The pea would only wash off the valves if it as more are doing a 2nd traditional (port) injection system. This allows the fuel to go over the valves and clean them as it had before di. Let it go long enough and some di can require specialized blasting to clean the carbon off using walnut or...

Sunoco at some stations sells/sold cam2 Cam 2 available in 110, 112, and 116 octane leaded. When gas was around $1.00-$1.50 a gallon it was around $3.50 at the one my town had. They do not use lead(tetraethyl) in their unleaded gasoline which should go without saying. Though it appears not...

Little bit older thread but so are crown Vic's I'm ordering the police ones. There are a few physical differences but the tolerances allowed appear to be tighter. Police rotors meet the SAE standard for tensile strength, guaranteeing structural integrity and maximum service life. A turned finish...

I normally used stoners cleaner but have griots now, don't see much difference. Though I will say expect to clean glass twice minimum if you really want it clear. There's most always a little residue left that likes to catch light or fog faster more so if smoking or you've detailed and there's...

I hadn't tried paste from them but the 845 I believe could be one the easiest removal products I've used. Granted I usually had applied it just before winter and use cleaner in the summer before application.

Sounds good I'll have to try some. Though It depends what your using the 303 on porous highly polished etc.. how long it will last.

Originally Posted by Chris142 It raises the boiling point of the coolant. IMO there is no reason to have more than 13psi on a street car. Especially an import with an aluminum head. So it won't boil till 267F but the head gaskets let go @245F. Rather odd advice to ignore what your vehicle...

WW and the others making a similar product are/were created to run in race cars where glycol was a no-no. Though it does provide a possible advantage even using coolant. However the way many measure it's effectiveness is flawed i.e. running cooler. Most cars unless you install one measure...

What it could do if it's a progressively finer filter layers it would be the opposite and load up faster and restrict the air prematurely.

If there's no activated carbon it wouldn't be as much a deal. But I've seen this on home hepa filters installed wrong and the charcoal got all over the blower.

Yeah $10 or 20 every year or 2 is not much besides keeping crap from getting drawn in. You can knock crap out but there's still a lot of small particles pulled into the material you can't get out. Eventually the charcoal does become ineffective esp important if you've got allergies. Any little...

Vinyl covered leather like on many of the cars is still leather but needs treated and much different. It needs to be small enough molecules to get down through the "pores" to the leather. Something like a thick creme could sit there till the rapture and not do much good. A soft natural hair nail...

With clearcoat you'll want to be sure it's one designed for how it's being used. Some will start to discolor and peel off if used on headlights. I haven't seen his chrisfix's video however you want to see what it looks like after a period of time. Just polishing with no protectant will look...

For the minor cost of a filter if it came with one or is designed for one to drop in why not. I've had cigarette butts and carpenter bees in cars i've changed, even with a screen it'll help more crap from getting to the blower. Quite often you can just as mentioned blow it out and keep using it...

The dry aren't simply non oiled filters they're different material many times instead using synthetic fibers. Aem for example makes 3,5, 7 and 10 layer filters depending on application and dry of oiled. There's but a few companies that own all the nation breweries. Try handing a bud drinker a...

Some are woven cotton not gauze as well think of a shirt vs a gauze bandage wrap. At a quick glance though they will look quite similar and may be multiple layers of increasingly finer filtration, tighter fibers.

Yup Ac Delco and I'm sure many others farm out or eventually farm out parts after several years. Filters might be Fram, Wix.. and change over the years. The air assist shocks they used to make became Gabrial hijacker with ac delco stickered over it. The problem was they cost more than the in...