Gulf Western 5W30 SynX4000 Full Syn Sn/ILSAC GF-5 - 5L

Gulf Western 5W30 SynX4000 Full Syn Sn/ILSAC GF-5 - 5L

Marsoni

M251S

$150.65

Get it in 3 business days with 1 day shipping. Friday, May 29

Gulf Western 5W30 SynX4000 Full Syn Sn/ILSAC GF-5 - 5LVISCOSITY 5W 30 SPECIFICATIONS API SP, ILSAC GF 6A, DX1G2. (Can also be used for turbo petrol, no load diesel engines) DESCRIPTION Syn X 4000 is a premium, full synthetic, high performance, passenger car motor oil. Suitable for use in advanced, high compression engines including turbo gasoline direct injection engines where it can prevent LSPI (low speed pre ignition) and timing chain wear. Meets SAE 5W 30, API SP ILSAC GF 6A, DX1G2, Ford WSS M2C 961

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They do seem to run a bit small. I bought them for my bf but snagged them from him because I couldn’t resist! I’m about a W8/12 and they were just a little big but unlike others, I just put them on while sleeping and didn’t walk around with them. If you’re just planning on that, they did a great job at sloughing and moisturizing 😎

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Reviewed in the United States on April 25, 2026

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Aaron Duncan

Battle Creek, US

★★★★★ 5

Good socks they work.

Size: 2 pairs black L

I normally wear size 13&half to 14 men's, and these fit me ok. They sit just below the ankle. They can get a little tight for me so you should look out for that if you are on the thicker side. But they work as advertised and help moisturize your feet. I recommend wearing them if you're going to just be hanging around home for a bit in one spot as they can be a little slippery to walk in if you go fast. Would not recommend going up and down stairs.

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Reviewed in the United States on August 28, 2025

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Brian

Fort Morgan, US

★★★★★ 5

Good socks

Size: 1 pair black L

Good socks

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Reviewed in the United States on May 6, 2026

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Amazon Customer

San Leandro, US

★★★★★ 3

REALLY unsafe to walk around in these

Size: 2 pairs black L

They do what they are expected to do, but should only be used if you are stationary. The gel base makes for very unstable footing if walking around

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Reviewed in the United States on May 27, 2026

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Suz

Draper, US

★★★★★ 5

These work

Size: 2 pairs black L

My husband loves these they help his very dry feet. As others have stated they are extremely difficult to walk in so have to be careful but they do work nicely.

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Reviewed in the United States on March 12, 2026