Join the Car Talk Community!

Posts Tagged "additives"

All posts below are tagged with "additives" (Browse all tags)

Mercedes Care: Just add . . . Urea?

03.20.2012
Dan's dealer says he'll need to add urea to his new Mercedes's engine. Is this necessary or is Dan getting suckered?

Today: Do Gas Additives Actually Improve Performance?

02.08.2012
Why should John pay his dealer for a fuel-induction service when he can save $100 by using a gas additive?

Today: The Firebird and the Angry Little Brother

11.15.2011
I learned that a "homemade octane booster" had been added to the gas tank of my friend's early-'80s Pontiac Firebird by an angry little brother.  The engine was running better than ever the next day.  Coincidence?

Should you wait until your car overheats to fix a blown head gasket?

10.01.2010
I have a 2002 Subaru Forrester. Upon my monthly check of fluids, I was shocked to see that there was no cooling fluid in the reservoir. I immediately took it to the shop, where they told me the head gasket was...

Does extra nitrogen in gas really do anything?

07.01.2009
Is there any merit to the claim that nitrogen in gasoline has any benefit for cleaning the engine? What's the chemistry behind it? Or is this just the latest gasoline-additive scam? -- David TOM: Hmm. Maybe they're trying to get...

What happens when gas sits around inside a car that's been parked for a year?

10.01.2006
My son has been in Iraq for almost a year. He left his car with us, and it has been sitting in the driveway the whole time. My plan is to sell the car and send the money to my...

Additives: often a profit-center for garages.

10.01.2004
In the past six months or so four auto-repair shops that I sometimes use including a Toyota and Subaru dealership have started to heavily promote additives They claim that worth of additives for fuel oil coolant and transmission identified as...

Do additives that claim to repair seals and stop leaks really work?

06.01.2003
I have a Jeep Grand Cherokee and live in the hot dry Southwest Both my main seal and my transfer-case seal are slowly leaking There are a number of additive products available at the auto-parts store that claim they will...

Is "dry gas" worth the extra cash?

04.01.2003
Every time I fill my gas tank I buy half a quart of dry gas My father says it really helps with the fuel line and keeps things clean Is this stuff legit or am I wasting my cash --...

What do the letters in "STP" stand for...and does it work?

09.01.1996
For a few years I have been trying without success to find out just what the letters STP stand for Many calls to large impressive lubrication headquarters around the country revealed only that it is a trade name of the...

Pages



Rocket Fuel