A tough, semi-synthetic 15W-40 marine diesel oil offering strong wear protection, corrosion resistance and long drain performance.
Ideal for high-speed and heavy-duty marine diesel engines and compatible with major manufacturers’ specifications.
For diesel engines only - not suitable for petrol engines.
This item is currently in stock. Order by 12pm and we will dispatch it today (Mon-Fri).
Penrite Marine Diesel 4-Stroke Semi Synthetic 15W-40 is a mid-ash marine diesel engine oil made from a blend of high-performance additives with mineral and synthetic base oils. It provides complete protection for marine diesel engines and exceeds API CI-4 industry standards, meeting many OEM performance requirements including extended drain intervals.
Designed for 4, 6 and 8+ cylinder naturally aspirated, turbocharged, supercharged, common-rail and direct-injection diesel engines, it suits moderate to severe service in high-speed and select medium-speed marine engines. Recommended where SAE 15W-40 or 20W-40 oils are specified, and suitable where API CI-4, CH-4, CG-4 or CF-4, as well as ACEA E4/E7 (pre-2017), are required. Compatible with engines from Caterpillar (except 3600), Cummins, Iveco (except C13 ENT M77), MAN, Mercedes-Benz, MTU, Perkins, Scania, Volvo and more.
Formulated with corrosion inhibitors and a high TBN, it delivers excellent detergent performance, long drain capability, and superior wear protection, including resistance to soot-related oil thickening. Ideal for coastal and fishing fleets, recreational craft, and suitable on- or off-highway diesel equipment where the required specifications are met.
For diesel engines only — not suitable for petrol engines.
Product Features:
See more information & specifications under the "Resources" tab.
Freight costs are calculated by order weight and postcode, and charges may be subject to change.
To view shipping rates and delivery times, add the items you want to purchase into your cart. Then click on "View Cart" or "Checkout", enter your postcode/select your suburb, and our shipping calculator will work this out for you (within Australia only).
During November, December, January & February (peak season / summer months / Xmas time) we unfortunately cannot guarantee delivery will arrive within our usual expected times and some delays may occur due to the increased amount of deliveries our carriers receive over this busy period.
Express Shipping (via Air) - usually arrives within 2-4 days
Express shipping will be offered for items under a certain length and/or weight and will display during the checkout process, if applicable for your order.
Orders placed after noon will be shipped the next business day (excluding weekends and WA public holidays).
Heavy/oversize items, hazardous items or items that include liquid do not qualify for Express Delivery because they cannot be sent via air.
Standard Shipping (via Road) - usually arrives within 5-9 days
Most small orders will be shipped by Startrack or Australia Post if the order fits within its weight/dimensions guidelines. Larger orders are shipped using the most economical options from one of our other transport partners.
We usually dispatch your order within 24 hours of receiving confirmation of payment (excluding weekends and public holidays).
FREE Standard Shipping (via Road) - usually arrives within 5-9 days
Free Standard Shipping is available for orders over $250, of certain products, and will be applied automatically as a discount code during checkout.
This offer EXCLUDES
dangerous goods,
over-sized items, items requiring
special packaging and items that are
shipped from our suppliers, as they incur a freight surcharge from our carriers. Icons showing whether an item falls into one or more of these categories are visible on the product detail page of affected products.
The free shipping offer also excludes any orders shipped to the Northern Territory or Offshore Islands.
Shipping Insurance - Not included in our FREE Standard Shipping Offer
Shipping insurance covers any order lost or damaged during transit (if selected during checkout). The cost of insurance is based on a small percentage of your order value. Shipping insurance will not cover orders that have been delivered and given authority to leave, but have gone missing.
New Zealand International Shipping - usually arrives within 5-12 days
Shipping to New Zealand will be offered for items under a certain length and/or weight and will display during the checkout process, if applicable for your order.
International Orders - delivery time varies
International orders cannot be processed through our shopping cart online, as yet. To place an international order, please contact our customer service team to obtain a quote including shipping.
Delivery to PO BOXES
Oversized products, dangerous goods, some various other items that require special packaging cannot be shipped to PO Boxes. You will not see a shipping option if your cart contains these items and you have entered a PO box in the shipping address field. Either change your shipping address to a physical address or contact us to provide a quote for shipping your items to a PO box.
See our delivery page for further information.