Unlocking the Mysteries of 10W30 and 10W40 A Comprehensive Analysis

In Stock

Size Guide

$34.99 $29.99

Shipping and Returns Policy

Motor oil grades like 10W-30 and 10W-40 refer to the oil's viscosity, or how easily it flows, at different temperatures. 10W-30 oils had better base oils and less viscosity improvers due to the narrower spread in viscosity, which is preferable. The main difference between the Castrol Edge 10W-30 and Castrol MAGNATEC 10W-40 lies in their high-temperature viscosity and their targeted use. Choose 10W-40 for high temps and older engines; 10W-30 for newer engines and better fuel economy. The difference between 10W30 vs 10W40 viscosities is the thickness at hot temperatures. During the cold temperature, they flow at the same rate. Magandang tugon. Ang tanging idadagdag ko lang ay ang bawat timbang ng langis ay may saklaw ng lagkit na maaaring maging grado. Ibig sabihin, ... 10w40 oil is almost always better unless you make many short trips in winter as 10w30 oil is less viscous when cold. Engine oils are divided into categories or grades based on their thickness level. The higher the grade of the oil, the thicker it is. 10W-40 has a higher elastomeric content than, say, 10W-30 oil. That means more viscosity index improver content in a quart (or, by extension less actual oil). 5738 Likes, TikTok video from DeXJs_ (@dexjs_): “Difference between 10W40 and 10W30!! HUGE!! #oilchange #mechanic #automotive #engine”.
  • Next Day Delivery by USPS Find out more

    Order by 9pm (excludes Public holidays)

    $11.99

  • Express Delivery - 48 Hours Find out more

    Order by 9pm (excludes Public holidays)

    $9.99

  • Standard Delivery $6.99 Find out more

    Delivered within 3 - 7 days (excludes Public holidays).

  • Store Delivery $6.99 Find out more

    Delivered to your chosen store within 3-7 days

    Spend over $400 (excluding delivery charge) to get a $20 voucher to spend in-store
  • International Delivery Find out more

    International Delivery is available for this product. The cost and delivery time depend on the country.

You can now return your online order in a few easy steps. Select your preferred tracked returns service. We have print at home, paperless and collection options available.

You have 28 days to return your order from the date it’s delivered. Exclusions apply.

View our full Returns and Exchanges information.

Our extended Christmas returns policy runs from 28th October until 5th January 2025, all items purchased online during this time can be returned for a full refund.

No reviews yet. Only logged in customers who have purchased this product may leave a review.