I have noticed that level senders seem to last longer when immersed in gasoline. Whether this is due to lubrication or due to some anti-corrosive effect, I don't know, but there seems to be a positive correlation.

On the C6, it's almost always the passenger side sender that goes bad. The passenger side tank empties first, leaving the sender high and dry for longer periods than the driver side sender.

If you leave the car half full much of the time, the driver sender might be submerged tens or hundreds of times longer.

For this reason I keep my car filled up or nearly filled up most of the time.

 

Thanks, appreciate it.

 

thanks for the clarification, I knew the bottle I got said every 1000 miles, I will have to look for the concentrate plus

 

I refill any time the gauge gets to 1/2, if convenient. The ~25 lbs extra weight makes little difference in the way I usually drive the car, and the old airline saying is:
"The only time I have too much fuel is if I'm on fire."

 

I don’t usually read this forum, but was referred here by a comment in the C6 forum. I certainly don’t want to get into a credentials fight with anyone, but I was a refining engineer for 42 years, and my mind has not gone senile in the 7 years since retirement. I’ve seen specific, real, engine testing data on two topics that were the basis for my statements about heavy use of Techron in other forums. One set of tests showed that heavy doses of a detergent do not do as good a job at cleaning up a very dirty engine as long term use of a normal level of top tier additives. The other set showed that if your engine is already clean, use of too heavy a dose of detergent can actually make it slightly dirtier, not cleaner, because the detergents themselves leave very small amounts of deposits. So I put those two together and conclude that occasional use of heavy doses of something like Techron would not be as effective at cleaning up a dirty engine as consistent top tier use, and that if the engine is already clean, might actually increase deposits by a tiny amount. So is an occasional can of Techron while using cheapo gas better than just using cheapo gas? Yup. But is it as good as consistent use of top tier? Nope.

 

Good to know, I was not aware that they were put back on the list.

 

First off - THANK YOU LDB - I think we all appreciate your input !!!

Second - while I typically try to patronize Top Tier stations - my real concern is stations that put regular gas in the premium tank. A friend I've spent a lot of time at the track with used to drive commercial vehicles - he had an opportunity to talk to a lot of other commercial vehicle drivers, some of whom drove the tanker trucks that deliver gasoline. He told me that many of the drivers had been offered some cash to just hook up the regular gas hose to both the regular and the premium storage tanks at some gas stations.

The profit potential is quite significant - most gas stations don't make all that much on a gallon of gas... But - there can certainly be significant money to be made selling regular gas at premium prices.

As far as testing goes - most states have agents that go around and verify that the pumps are dispensing the correct amount of fuel - but to actually test octane levels requires the gas to be taken to a lab that has the capability to do that test - I don't know for sure - but I bet that doesn't happen too often.

So - my $0.02 - don't buy gas (particularly Premium) on price alone - if the station seems to be cutting corners in some areas - it's quite possible that they may be trying to find other ways to make a profit...