Which oil?
Thread Starter
Heel & Toe
Joined: Apr 2010
Posts: 22
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From: Laredo TX
Which oil?
I'm up for an oil change, am thinking royal purple... What grading? 10-30? Or 5-20? Or anything else? Recomendations? I live south of tx, where it's scorching hot outside... I'd appreciate it if someone helped me with the oil thAt can withstand the heat.. I think 5-20 becuz the haynes book n engine says that grade... Help please
Le Mans Master
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From: One day you're a Comet...the next day you're dust... Arkansas
10w-30 is what the manual calls for. I like 5w-30 synthetic blend in my 1989. Valvoline makes a good one for older or high millage cars that will condition your seals.
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From: Overland Park Kansas
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Heavier oil is usually a good thing for really hot climates. 10w-30, 10w-40, or even 20w-50 are all options. Synthetic is known for it's extra ability to fight the stress of high temps (like you describe).
Royal Purple HASN'T tested that well in wear tests. It's also over-priced IMO. Put at least one or two quarts of synthetic with dino. IOW, a blend or 100% synthetic should serve you well. I also think all the brands are acceptable. But, I'd let price and leaks influence my decision.
IOW, don't ignore lower-priced options than Royal Purple and don't be afraid to use heavier weights -- especially if you have oil leaks while running synthetics.
Note: Synthetics are more likely to leak in older cars because of their uniform molecular contruction. And, they aren't necessary for adequate protection.
Royal Purple HASN'T tested that well in wear tests. It's also over-priced IMO. Put at least one or two quarts of synthetic with dino. IOW, a blend or 100% synthetic should serve you well. I also think all the brands are acceptable. But, I'd let price and leaks influence my decision.
IOW, don't ignore lower-priced options than Royal Purple and don't be afraid to use heavier weights -- especially if you have oil leaks while running synthetics.
Note: Synthetics are more likely to leak in older cars because of their uniform molecular contruction. And, they aren't necessary for adequate protection.
Last edited by GREGGPENN; Aug 23, 2010 at 07:45 PM. Reason: Fixed error -- bold and underlined.
Le Mans Master
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From: One day you're a Comet...the next day you're dust... Arkansas
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