any reason not to use 5w-30?
- Thread starter Pistons23
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Nope, none that I can think of. I would just stick with the 5w-30.
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A lot of attention is paid to automobile engines during start-up due to emissions being high at this point. The lower viscosity of the oil when cold helps the engine turn easier helping with emissions. If you live in a cold climate, I would stick with the 5-30. In warmer/hot climates 10-30 would be fine. As far as actually hurting the engine, no.
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10-30 is fine, i run 20-50 in all my fords just because it keeps the valves quieter. but for a newer ford, id say 10-30 is fine
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You could use 10w-30 but there isn't really any point. 5w-30 works well in all temperatures.
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i use dino 5w30 valvoline or castrol gtx together with a motorcraft filter. never an issue and the oil stays clean for quite a while after each change.
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i use royal purple i love the stuff and ,despite the price, is an awesome product. I HAVE been using full synthetics since i got the truck and its been nothing but smooth sailing. *knock on wood*
i love the stuff and ,despite the price, is an awesome product. I HAVE been using full synthetics since i got the truck and its been nothing but smooth sailing. *knock on wood*- Joined
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Been using full synthetic 5w40 all winter in our ol' girl. Guy at Advance pointed it out when I was looking over mobil-1. Truck seems to enjoy it. Hitting it with 10w40 mobil-1 when the temps get steady above 45 for the late spring/summer months. (great sale...5 qts of full syn, and a mobil-1 filter for 29 bucks)
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thank god for walmart. just picked up a 5quart jug of pennzoil high mileage 5w-30 for $13.50. im going to see if it makes a difference vs. castrol gtx high mileage 10w-30 thats in the truck now.
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Same here. The stuff is amazing!
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