$5 gas? Here's one way to really save: Invest.

$5 gas is going to pinch no matter how much you inflate your tires or slow your speed. But buying oil-sector shares can more than make up for the economic setback from $5 gas.

As you’re undoubtedly aware, gas prices are spiking – again. And as always happens when gas prices spike, the media will soon begin gushing tired and obvious advice on ways to save.

I’ve been watching, and participating in, this well-worn parade of stories for more than 20 years. But no more. Because while the advice offered is largely sound, it misses the point entirely. Here’s the point: When it comes to gas prices, even the feared $5 gas level, if you can’t beat ‘em (you can’t), join ‘em (you can).

By way of illustration, here’s an article I wrote the last time gas prices spiked. It was published on Dec. 8, 2010. I reprint it here exactly as it was written. Check it out, then I’ll give you a short update…

28 Ways to Save on Gas You Already Know – And Maybe One You Don’t (see below)

The last time you were at the pump, you probably noticed the price of gas is creeping skyward. According to the American Automobile Association (AAA), a gallon of unleaded is now averaging $2.95: up 10 percent in the last year and nearly 4 percent in just the last month.

Get used to the idea. As the world economy improves, rising world demand for oil, coupled with a weak dollar, virtually guarantees higher prices. Oil yesterday broke the $90/barrel barrier – the highest it’s been since 2008. And some experts are predicting $100/barrel won’t be far behind.

Just as predictable as higher prices at the pump are the plethora of articles you’ll soon start seeing offering advice to save on gas. As you did the last time prices spiked, you’ll see ideas like “shop around,” “slow down,” or “use a gas credit card that offers rebates.” If they sound familiar, that’s because you got them in 2008.

Last week SmartMoney published an article called 3 New Ways to Save on Gas. But I guess they don’t read their own work, because one of their “new” ideas (buying gas from a warehouse club like Sam’s, Costco or BJ’s) was in an article from June 17, 2009, called 7 Ways to Save on Gas.

To save you from having to surf the web for obvious advice, here’s a condensed version recently culled from popular personal finance sites. After you check these out, I’ll tell you the best way to deal with higher gas prices – really.

The 28 ways to save on gas you already know

1. Pay cash (If you get a discount for it – which is rare indeed)
2. Fill up at the warehouse club (I know – you told me: twice)
3. Shop around (You mean some places have lower prices than others? I never knew that!)
4. Slow down (Oh, is that how that works? The slower you go, the less gas you use? Thanks.)
5. Take the extra weight out of your car (Good advice – that’s why we gave it years ago.)
6. Get a tune-up (See above)
7. Get a gas rewards card (See above)
8. Get a tire alignment (See above)
9. Clean your air filters (See above)
10. Check your tire pressure (See above)
11. Eliminate jack-rabbit starts (You mean to save gas, I shouldn’t stomp on the pedal?)
12. Carpool (this came from an article called 8 New Ways to Save on Gas from U.S. News & World Report in 2008 – but believe it or not, I suggested every one of these tips in a TV news story in 1991)
13. Ride a bike (Great idea – unless it’s 4 degrees outside or I’m taking my girlfriend with me)
14. Buy a car that gets better mileage (Spend $25,000 to save $5 a month – how ingenious!)
15. Use a smart phone app to find nearby low prices (This is a good idea – that’s why we suggested it in 2008)
16. Brake the right way (Meaning as little as possible. Here’s an idea: how about disconnecting the brakes entirely!)
17. Turn off your air conditioner (You turn off your air conditioner – I live in Florida)
18. Close your windows (They are closed: My air conditioner is on)
19. Pick a better route (Really? I try to find the longest, most indirect route possible whenever I drive)
20. Combine trips (Good common sense – which is why we already knew it)
21. Ride the slipstream (better yet – drive onto a car-carrier at a truck stop)
22. Target the best time of day to get gas (I’d suggest when the attendant is in the restroom)
23. Don’t fill up until you’re empty (I guess that means I should carry a gas can in my trunk?)
24. Make sure your gas cap is tight (What…I’m not supposed to leave it on the trunk of my car?)
25. Don’t idle (This suggestion was to turn off your car if you’re going to idle for more than 30 seconds. Save $5 on gas – spend $500 on a new starter)
26. Don’t use high octane gas unless your car is pinging (That was good advice when I first gave it in 1991)
27. Don’t top off your tank (The sticker on the gas pump already told me this)
28. Watch traffic ahead of you so you can anticipate slow-downs and avoid stops (this is especially important if you’ve disconnected your brakes)

The one way to deal with higher gas prices you might not have considered

While this way to deal with rising gas prices has probably also been written about before – everything has – I offer it nonetheless: Hedge against higher gas prices by owning a few shares of an oil company’s stock. Not only will your shares likely rise with rising oil and gas prices, added bonus: You might earn a higher interest rate on your savings as well.

If you check out my online portfolio, you’ll note that I bought 300 shares of ConocoPhillips in the spring and summer of 2009 at an average price of about $37/share. So I invested about $11,000 in this stock. It’s now at about $64/share and worth about $8,000 more than I paid. Some of that 70 percent gain undoubtedly comes from the fact that the entire stock market has rebounded nicely since then: The Dow was only at about 8,000 in July of 2009 – it’s 37 percent higher now. But a lot of the gain is probably due to oil prices. When I bought ConocoPhillips, oil was $59 a barrel – now it’s $90.

So the gains I’ve made by owning this stock have more than offset any extra money I’m paying for gas. In addition, ConocoPhillips pays a nice dividend: $2.20/share, which comes out to 3.42 percent at today’s prices. Are you earning 3.4 percent in your savings account? I’m not.

In short, owning an oil company like this one can pay in two ways: The dividend may offer a heck of a lot more interest than your bank, and the stock might be a very effective hedge against rising oil prices.

Are there drawbacks to owning shares in an oil company? Of course. First, while doing things like rolling up your windows or properly inflating your tires cost nothing, buying ConocoPhillips means coming out of pocket to the tune of $64/share. Second, as with all stocks, there are obvious risks involved. While it’s unlikely ConocoPhillips will go belly-up, I just told you it was $37 a share less than two years ago. There’s no law that says it can’t go there again. Nonetheless, if oil prices do go higher in the weeks and months ahead, it’s highly likely that owning shares in an integrated oil company will be more effective than rolling up your windows.

I’m not particularly touting one oil company over another – if you like the concept, do a little research on your own. To get you started, here’s the page of analysts recommendations re ConocoPhillips.

But humor me – Assume you buy a few shares of ConocoPhillips at today’s price of $64/share. If gas prices go up, see if it goes up with them.

And even if you hate my idea to defend against higher pump prices, at least give me credit for not serving up 20-year-old tips and calling them “new”.

2012 Update

While it’s true that using some or all of those tired tips will help you save gas, when I wrote that article two years ago, gas was $2.95. Now it’s approaching $4. Use as many tricks as you want – they won’t keep you ahead of this game.

And what’s happened to ConocoPhillips?

Yesterday ConocoPhillips closed at just under $75. Which means it’s gone up $11/share, or 17 percent. It’s also increased its dividend 20 percent, from $2.20/share in 2010 to $2.64 today. Since I’ve been reinvesting my dividends into more shares of stock, I now own 332 shares instead of 300, which are now worth just under $25,000, compared to my purchase price of $11,000.

Now we’re talking about keeping up.

The lesson

Personal finance isn’t about pinching pennies, it’s about becoming wealthier, or at least maintaining your current wealth. In the case of combating rising oil, while pinching pennies doesn’t hurt, it doesn’t come close to solving the problem. Nor does republishing gas saving tips from 2008 or 1991.

Want to become wealthier? Whenever you find yourself the victim of price hikes, see if there’s a way to also become a beneficiary. In this case, there is.

As I said in my 2010 post, stocks are risky. If you can’t afford the risk, don’t take it. But if you can – even if it’s just with a couple of hundred bucks – you’re potentially going to go a lot farther than you will by rolling your windows up.

Has this train left the station? If I thought so, I wouldn’t still have 25 grand in Conoco.

– Stacy Johnson is a journalist, author, and executive producer and publisher of Money Talks News, a consumer/personal finance TV news feature that airs in about 80 cities as well as around the Web. This column first appeared in Money Talk News.