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Valvoline conventional, castrol edge or castrol gtx?

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Old 03-13-2009, 05:47 PM
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Valvoline conventional, castrol edge or castrol gtx?
Hi there,

Was looking to buy some oil today, before I do. I'd like some oppinions on Castrol edge 5w-30, valvoline mineral 5w-30 or castrol gtx 5w-30.

What do you guys think?

Thanks,
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Old 03-13-2009, 06:05 PM
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Originally Posted by GeoffJ
Hi there,

Was looking to buy some oil today, before I do. I'd like some oppinions on Castrol edge 5w-30, valvoline mineral 5w-30 or castrol gtx 5w-30.

What do you guys think?

Thanks,
I'm on Castrol GTX 5w-30 for now. 3.2K miles and counting.
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Old 03-13-2009, 06:06 PM
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Ibtl.

But out of those three I like Catrol GTX.
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Old 03-13-2009, 06:15 PM
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i also prefer Castrol GTX. i've used it for years in my RX-7's with excellent results and will change the oil in my 8 tomorrow with it.
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Old 03-13-2009, 06:22 PM
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Well, i wouldnt want some freaky Irish dude comin out of nowhere and whakking my *** with a dipstick....so if i were you i would go wit the Edge. Ok, lame joke



On serious note, i too have used GTX in my 7 and it has done me well. I use Idemitsu in my 8 but thats just because a local shop stocks it, so...
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Old 03-13-2009, 06:46 PM
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^ Same here, I use Idemitsu in my 8 but I used Catrol GTX in my 7.
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Old 03-13-2009, 07:23 PM
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weee, all good. found a local seller with royal purple 5w30. so happy... haha
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Old 03-13-2009, 08:35 PM
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Edge is another BP's "fake" Synthetic oil.

Valvoline is not that great

so use GTX

I use nothing but "True" Full Synthetic so.
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Old 03-13-2009, 08:37 PM
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Gtx
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Old 03-14-2009, 01:05 AM
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90aud for 5L of RP >_<
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Old 03-14-2009, 09:45 AM
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Castrol GTX 10W-40 for what ales ya!!! Been running GTX for 25 years and never had any sign of trouble.
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Old 03-14-2009, 03:52 PM
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GTX 5w-30
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Old 03-14-2009, 05:32 PM
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Penzoil 5w-30
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Old 03-15-2009, 05:13 PM
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I use valvoline..thats wat my mazda dealer uses
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Old 03-15-2009, 05:20 PM
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Been using GTX for over 40 years, although I don't remember if was been called that all the way back. My dealer also uses GTX.

I think I've posted before that I wouldn't use synthetic oil. This is a nice car, it deserves the real stuff.

Ken
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Old 03-15-2009, 07:50 PM
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Motorcraft 5W20 syn. blend. Seems to do the job just fine. I think that, as long as you change your oil on time, and don't track the car frequently, we're picking nits about how "good" any particular oil is.
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Old 09-23-2010, 11:16 AM
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changed to Castrol GTX 20W-50 today. engine regained its power back.AND RUNS A LOT SMOOTHER THAN BEFORE. i use this cause i live in a hot enviorenment. 30C degrees. so if i was you defenetly CASTROL GTX
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Old 09-23-2010, 11:41 AM
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TX
Originally Posted by lalinka
changed to Castrol GTX 20W-50 today. engine regained its power back.AND RUNS A LOT SMOOTHER THAN BEFORE. i use this cause i live in a hot enviorenment. 30C degrees. so if i was you defenetly CASTROL GTX
Maybe you just needed an oil change, heavier oil will not restore power or make it run smoother. Oh and you call 30c hot?


http://www.flickr.com/photos/9krpmrx8/4913068007/http://www.flickr.com/photos/9krpmrx8/4913068007/ by http://www.flickr.com/people/9krpmrx8/, on Flickr
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Old 09-23-2010, 01:17 PM
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MD
Originally Posted by 9krpmrx8
Maybe you just needed an oil change, heavier oil will not restore power or make it run smoother. Oh and you call 30c hot?



DSC_0007 by 9krpmrx8, on Flickr
How do you get that readout?
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Old 09-23-2010, 01:41 PM
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Here

https://www.rx8club.com/series-i-tech-garage-22/my-invention-best-boost-can-gauge-ever-oem-red-lcd-display-195323/
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Old 09-23-2010, 02:33 PM
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you live in the dessert, you need to consult a camel
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