O'Reilly 5-30 SM GF4

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When I worked for them ('99-'03), the house brand oil was made by Coastal. Rumor had it was [censored].

Since then, I have heard now it is made by Citgo and is a decent conventional oil. Interestingly enough, they used to stock the CITGO conventional oil and now they don't hmmmm maybe what I heard is correct?
 
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