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- Newsgroups: rec.autos.tech
- Path: sparky!uunet!stanford.edu!kronos.arc.nasa.gov!chucko
- From: chucko@kronos.arc.nasa.gov (Chuck Fry)
- Subject: Re: using different Oil than reccomened
- Message-ID: <1992Jul29.144437.3919@kronos.arc.nasa.gov>
- Sender: usenet@kronos.arc.nasa.gov (Will Edgington, wedgingt@ptolemy.arc.nasa.gov)
- Nntp-Posting-Host: mccarthy.arc.nasa.gov
- Organization: Recom Technologies, NASA Ames Research Center, Moffett Field, CA
- References: <182821@pyramid.pyramid.com>
- Distribution: usa
- Date: Wed, 29 Jul 1992 14:44:37 GMT
- Lines: 24
-
- In article <182821@pyramid.pyramid.com> aahsan@pyramid.COM (Agha Ahsan) writes:
- > What are the ramifications of using thicker oil than
- > that reccomended by manufacturer, especially for
- > turbo engines. ex: use 20w50 in place of 10w30.
-
- If the engine is relatively new and in good shape, don't bother.
-
- Heavier weight oil has some crucial disadvantages. It doesn't get
- distributed as quickly on cold starts, and it increases friction
- compared to a lighter weight oil. This means the turbo won't spin up
- as quickly, resulting in more turbo lag. The combination also means
- more wear on the engine's internal parts.
-
- It might be justified if you live in a very warm climate (e.g.
- Phoenix), or if the car routinely sees extremely hard use (e.g. road
- racing). Or if the engine is so worn that it won't hold enough oil
- pressure with the recommended oil.
-
- A better bet, especially with turbos, is synthetic oil. No matter
- what weight you use, synthetic oil will stand up to turbo heat better
- than petroleum based oil. Yes, it's expensive, but so are replacement
- turbos. It's your choice.
-
- -- Chuck Fry Chucko@charon.arc.nasa.gov
-