10% Off
10% off
10% Off Oil at Insane Diesel
20% chance
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Save at Insane Diesel with verified coupon codes, promo codes and exclusive offers.
6
Codes
0
Verified
20% Off
Best Deal
Updated Aug 15, 2026
Best code right now
20% off
Daily average across every live code, tracked automatically — not a one-time snapshot.
20%
0/6 strong
More codes — may have expired
10% off
10% Off Oil at Insane Diesel
7% off
7% Off All Bypass Oil Filter Kits at Insane Diesel
5% off
5% Off Storewide at Insane Diesel
5% off
5% Off Bypass Oil Filter Kits at Insane Diesel
Free Shipping
Free Shipping Storewide at Insane Diesel
TrulyThrift currently tracks 6 Insane Diesel coupon codes. The best available discount right now is 20% Off. Page last verified Aug 15, 2026.
Save at Insane Diesel with verified coupon codes, promo codes and exclusive offers.
Visit Insane Diesel ↗| Offer | Discount | Type | Status |
|---|---|---|---|
| 20% off | 20% Off | Percent | Unverified |
| 10% off | 10% Off | Percent | Unverified |
| 7% off | 7% Off | Percent | Unverified |
| 5% off | 5% Off | Percent | Unverified |
| 5% off | 5% Off | Percent | Unverified |
| Free Shipping | Free Shipping | Shipping | Unverified |
Truly Thrift verifies Insane Diesel codes through a three-layer system: automated checkout testing, cross-source corroboration, and real shopper reports. Verified codes show a green badge; other codes show their recent chance of working. Code health is a per-code reliability score built from that evidence — right now the 6 codes listed for Insane Diesel carry an average code health of 20%. Read our full verification process for details across every store.
Direct checkout testing currently covers Shopify storefronts, with more platforms rolling out over time. Until Insane Diesel is covered, Layers 2 and 3 below carry more of the weight for this store's codes.
For codes we can't test directly, we check whether independent coupon listings still show the same code as active. If independent sources agree a code is gone, we downgrade or hide it — even before a shopper reports back.
Every "Worked" / "Failed" button on this page feeds straight into these codes' scores. No shopper reports have come in for Insane Diesel this week yet — yours would be the first.