Tag: additives
35 Posts

Oct 18, 2019
Swing and a Misfire for This Honda Civic's Engine Diagnosis
Find out how spark plugs, Perry Mason, and grilled squirrels can be related to fixing a Civic.
gasoline gas tanks ignition spark plugs additives Honda Civic Sdn 2001

Jan 26, 2017
Proper Maintenance, Not Additives, Is What a Car Needs
Prolonging your engine's life may mean keeping clean oil in it instead of feeding it slick additives.

Mar 20, 2012
Mercedes Care: Just add . . . Urea?
Dan's dealer says he'll need to add urea to his new Mercedes's engine. Is this necessary or is Dan getting suckered?

Feb 08, 2012
Today: Do Gas Additives Actually Improve Performance?
Why should John pay his dealer for a fuel-induction service when he can save $100 by using a gas additive?

Nov 15, 2011
Today: The Firebird and the Angry Little Brother
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?

Oct 01, 2010
Should you wait until your car overheats to fix a blown head gasket?
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...

Jul 01, 2009
Does extra nitrogen in gas really do anything?
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...

Oct 01, 2006
What happens when gas sits around inside a car that's been parked for a year?
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...

Oct 01, 2004
Additives: often a profit-center for garages.
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...

Jun 01, 2003
Do additives that claim to repair seals and stop leaks really work?
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...