# Ruh roh...

**URL:** <https://forums.speedlife.net/t/ruh-roh/244232>\
**Category:** Shift518 Automotive\
**Created:** [May 18, 2009, 9:44pm UTC](https://forums.speedlife.net/t/ruh-roh/244232 "2009-05-18T21:44:22Z")\
**Posts on this page:** 1\
**Showing post:** 56

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**Author:** ![Boxersix](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/boxersix/32/6327_2.png) [@Boxersix](https://forums.speedlife.net/u/Boxersix)\
**Post date:** [May 20, 2009, 9:19am UTC](https://forums.speedlife.net/t/ruh-roh/244232/56 "2009-05-20T09:19:40Z")

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> [@WNYFBody stolen...](https://forums.speedlife.net/t/wnyfbody-stolen/18366/11):
>
> I disagree, there is a lot of worries. Countless times I’ve read about engines being blown from it not working, etc. But I think it really is about what failsafes are present.
> 
> What’s the cost of meth?

Use methanol are a backup with slight increases in timing and you’re fine. Using it as a pure performance gain and there’s always a chance something can fail. I typically use it more for the cooling affect, rather than the increase in octane it offers(allowing increase timing adavnce).

VP M-1 floats around $40 for five gallons. I’ll typically run 3:1 meth/water ratio for street cars. Most systems can’t handle much more of a concentration than that without part degredation over time.

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