Note: We summarize the promotion terms as offered by the provider, but be sure to personally verify all information and requirements before submitting; we are not responsible for ineligible submissions.
Walmart has select
Mobil Delvac Extreme Heavy Duty Full Synthetic Diesel Engine Oils (15W-40) on sale
from $9.77 after a
Mobil Delvac Rebate,
see below for details.
Shipping is free w/ Walmart+ (
free 30-day trial) or on orders of $35+, otherwise select free store pickup where available.
Thanks to Community Member
BabyBubba for sharing this deal.
- Note: Maximum total of up to $100 back per household, please check the rebate form for full terms & details. Rebate is paid our as a Visa Prepaid Card. Pricing and availability for purchase may vary by location.
Available Options:
Rebate Notes:
- Only eligible Customers may receive a rebate.
- Fully complete the online proof of purchase form at promotion.mobil.com/offers/delvacrebate. Upload an image of your receipt(s) from a participating retailer dated during the Promotion Period with Eligible Product(s) circled. All online submissions must be completed by 11:59:59 p.m. CST, May 7, 2025. You must complete a separate online offer form for each receipt with Eligible Products. Illegible images will not be accepted.
- For online purchases, upload the invoice and final delivery or pick-up receipt for your qualifying purchase from a participating retailer.
Top Comments
45 Comments
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I won't advise you what oil to run; that's ultimately your decision. However, given your Kohler spec, I would not hesitate to run a 10W30 through 10W50 full synthetic diesel oil in my Kohler. I would stay away from any 15W prefix viscosities for optimum lubrication at cold start. Lower viscosity oils within your acceptable range (10W30) will give you maximum power and fuel efficiency, whereas higher viscosity oils within that range (10W50) will give you better film strength and wear protection at the expense of fuel efficiency and maximum power. I personally prefer to run the higher viscosity when given the choice, for the sake of engine longevity.
One of the biggest differences in diesel oil is zinc content, which is advantageous to small engine use as a wear preventative. It goes without saying, but since your Cub Cadet is new I would strictly adhere to the manufacturer's warranty specification for oil until the warranty runs out. In this case, that means automotive oil with SJ or higher rating and no diesel oil.
I will add that running full synthetic oil and changing it regularly keeps your engine internals almost spotless, with zero sludge build-up. On my vehicles I change oil and filter every 3,000 miles, on mowers and such I go every 100 hours or once a year, whichever comes first. It's also advisable to install a fuel shut-off valve on your mower, to close when not in use. This prevents a leaky carb needle and seat from pushing gasoline into your crankcase (also a necessity when trailering your mower due to the bouncing action), which has ruined many a good mower engine.
I won't advise you what oil to run; that's ultimately your decision. However, given your Kohler spec, I would not hesitate to run a 10W30 through 10W50 full synthetic diesel oil in my Kohler. I would stay away from any 15W prefix viscosities for optimum lubrication at cold start. Lower viscosity oils within your acceptable range (10W30) will give you maximum power and fuel efficiency, whereas higher viscosity oils within that range (10W50) will give you better film strength and wear protection at the expense of fuel efficiency and maximum power. I personally prefer to run the higher viscosity when given the choice, for the sake of engine longevity.
One of the biggest differences in diesel oil is zinc content, which is advantageous to small engine use as a wear preventative. It goes without saying, but since your Cub Cadet is new I would strictly adhere to the manufacturer's warranty specification for oil until the warranty runs out. In this case, that means automotive oil with SJ or higher rating and no diesel oil.
I will add that running full synthetic oil and changing it regularly keeps your engine internals almost spotless, with zero sludge build-up. On my vehicles I change oil and filter every 3,000 miles, on mowers and such I go every 100 hours or once a year, whichever comes first. It's also advisable to install a fuel shut-off valve on your mower, to close when not in use. This prevents a leaky carb needle and seat from pushing gasoline into your crankcase (also a necessity when trailering your mower due to the bouncing action), which has ruined many a good mower engine.
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https://www.amazon.com/Fuel-off-V...r=8-5&th=1
Yep, esp Toyota with that 0-8w shit that's like $20/qt.
Add some stabil and a few drops of techron. Engine runs smooth and very fast.
Yes the deck is all rusted out, but duck tape and safety glasses are your friend