Castrol or Chevron for Miata

Messages
1,759
Location
Elizabeth City NC
My 2001SE Miata has 33,000. I use Mobil 1 and 6000 mile changes as opposed to Castrol GTX and 3000 mile changes. I think the long term will be better when I have 200,000+ miles on the car. I base this on others experience with both of these oils as well as my own.
 
Messages
2,768
Location
Tn
quote:
Originally posted by TR3-2001SE: My 2001SE Miata has 33,000. I use Mobil 1 and 6000 mile changes as opposed to Castrol GTX and 3000 mile changes. I think the long term will be better when I have 200,000+ miles on the car. I base this on others experience with both of these oils as well as my own.
I don't have a Miata, but I used GTX for years and after Mobil 1, I'll never go back. Worth it.
 
Messages
8
Location
SoCal
Yes, I considered using synthetic, M1 comes to mind. I live in SoCal, no weather issues to contend with. Talking to the people in my Miata club, if the oil and filter is changed every 3,000 dino is fine. Nick
 
Messages
11,284
Location
Spring HIll
Chevron noticeably reduced NVH in my Saturn compared to other oils. While I liked the Chevron product, I decided to give M1 a try. I switched from Chevron to M1 in this car so I wouldn't have to crawl underneath the thing every 4-5 weeks. And the MPG was helped out by using an oil (M1) that creates less friction than it's dino counterparts. It's quite convienient to only have to change oil and filter twice a year! [Cheers!]
 
Messages
2,703
Location
Lincoln, NE
If you're staying with dino, GTX is fine. In fact in my old worn SHO, Mobil 1 gave me idle oil pressure problems after being beaten on for a bit. GTX never did that (same visc. grades).
 
Messages
2,149
Location
USA
Chevron Distribution Center got the Delo 400 10-30, a step above the GTX, it's little protection from dino but a step below synthetic. Price wise, you can't go wrong comparing with synthetic..
 
Messages
8
Location
SoCal
I hope this hasn't been question hasn't been beaten to death. I have a '01 Miata with 22,000 miles on the clock. After about 500 miles I changed the oil to Castrol GTX 10-30. I've changed the oil with a new factory filter close to every 3,000 miles. Reading here, Chevron seems to be very popular. Would there be any reason to start using Chevron over Castrol? I don't auto cross, but I do like to keep the RPM's up to get the most out of the engine. Thanks! Nick
 
Messages
4,872
Location
MN
quote:
Originally posted by Bror Jace: Chevron's base oil is a tick better than Castrol's last time I got the skinny on both. I've forgotten where Castrol buys their base stocks from but Chevron's "iso-syn" is hydrocracked to a degree and either a very stable Group II or Group II+. Chevron Supreme has the reputation for leaving engines cleaner than most Castrol products ... but this is anecdotal and Castrol could have updated their formula 2-3 times since then. GrnZoom, I doubt you'd have any trouble with any dino oil with short (3,000 mile) drain intervals but my preferences are Chevron/Havoline and Pennzoil which uses a hydro treated base stock as well. Quaker State, Castrol GTX and most others occupy a 2nd tier of brands (for me). Because of marketing decisions, Chevron and Havoline are less expensive than most other national brands. I avoid Valvoline All-Climate because you are paying a premium for the name/marketing/image and it appears to have the weakest additive package of any oil in its class. --- Bror Jace
I think this is a good summary of what I've read on this board. -T
 
Messages
8
Location
SoCal
Thanks guys for your time and comments. I still have a few quarts of Castrol to used up, after that I will probably go with Chevron. I will keep reading and learning. Nick
 
Messages
5,069
Location
Saratoga, NY
Chevron's base oil is a tick better than Castrol's last time I got the skinny on both. I've forgotten where Castrol buys their base stocks from but Chevron's "iso-syn" is hydrocracked to a degree and either a very stable Group II or Group II+. Chevron Supreme has the reputation for leaving engines cleaner than most Castrol products ... but this is anecdotal and Castrol could have updated their formula 2-3 times since then. GrnZoom, I doubt you'd have any trouble with any dino oil with short (3,000 mile) drain intervals but my preferences are Chevron/Havoline and Pennzoil which uses a hydro treated base stock as well. Quaker State, Castrol GTX and most others occupy a 2nd tier of brands (for me). Because of marketing decisions, Chevron and Havoline are less expensive than most other national brands. I avoid Valvoline All-Climate because you are paying a premium for the name/marketing/image and it appears to have the weakest additive package of any oil in its class. --- Bror Jace
 
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