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- From: leonglaw@hpsgm2.sgp.hp.com (Lawrence Leong)
- Date: Wed, 19 Aug 1992 12:01:59 GMT
- Subject: Re: Gas driers - which ones are bad?
- Message-ID: <53110024@hpsgm2.sgp.hp.com>
- Organization: HP Singapore
- Path: sparky!uunet!charon.amdahl.com!pacbell.com!mips!sdd.hp.com!hpscdc!hplextra!hpcc05!hpsgm2!leonglaw
- Newsgroups: rec.autos.tech
- References: <Bt3vID.1Hp.1@cs.cmu.edu>
- Lines: 40
-
- In rec.autos.tech, borowski@hpspkla.spk.hp.com (Don T. Borowski) writes:
-
- |In rec.autos.tech, arup+@cs.cmu.edu (Arup Mukherjee) writes:
- |
- |>I remember reading (several months back) in this newsgroup that
- |>certain types of gas line driers could be harmful to the fuel system
- |>because they contain some chemical that attacks rubber. It was also
- |>mentioned that other products that use some other chemical are safe.
- |>I was hoping that someone could remind me what the two chemicals in question
- |>are.
- |
- |Many gas line drier products are just plain methanol, which can attact
- |rubber and even metal. The better products (though less frequently found)
- |are isopropyl alcohol. This stuff is more benign, and and carry more water
- |as well. It also is a good fuel injector cleaner
-
- Therefore, can I add a dose of isopropyl alcohol (IPA) every 'x' tankfuls, say
- 500cc per dose? Is there any particular min grade of IPA to be used?
-
- |
- |>Also, on a separate note - can water in the gas cause pinging? (No, my car
- |>isn't pinging but...) I noticed that one of the brands of "dry gas" I looked
- |>at claimed to stop pinging...
- |
- |Methanol (and I think isopropyl alcohol too) is a high octane fuel, and so will
- |reduce pinging. Although water is not a fuel, if mixed with fuel, it will
- |also help prevent pinging. This has to be done carefully--you can't just
- |dump water into your gas tank.
-
- I thot the original poster wanted to *get rid* of water? Anyway, is water
- miscible with petrol? Inquiring minds want to know.
-
- lawrence
-
- |
- |
- |Donald Borowski WA6OMI Hewlett-Packard, Spokane Division
- |"Angels are able to fly because they take themselves so lightly."
- | -G.K. Chesterton
- |
-