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I followed this lifted Lexus today down the Thompson River Gorge. Nobody would believe if I didn't have a photographic evidence.

Low-speed pre-ignition (LSPI) Questions with Answers Question 1: Which of the common OEM oil specs (from VW, Mercedes, BMW, etc) include some form of LSPI test, and how do the tests vary? We know it’s a focus of API and ILSAC, but LSPI testing is also part of some of the other major euro OEM...

2024 Chevy Tahoe LM2 Duramax 12,196 miles/252 hours on oil - 27,296 total miles/569 total hours - copper and tin in oil This is the last UOA from my 2024 Chevy Tahoe 3.0L Duramax diesel engine. This engine had a faint lower end knock that I would listen to when I pulled it into the garage. At...

[Edit - Answers posted here] https://bobistheoilguy.com/forums/threads/pennzoil-low-speed-pre-ignition-lspi-q-a-answers.396806/ Hello BITOG Members: Pennzoil here! Welcome to another virtual community event as we discuss relevant engine operation and motor oil topics. We invite members to...

This very old Hart-Parr tractor is sitting in front of Kit Carson Cafe in Kit Carson, CO. I believe it was manufactured before 1923. Wash and oil the air cleaner core at least twice per day!

This is my post about the condition of the TMAP sensor after 17,500 miles when I cleaned the TMAP sensor and installed the S&B spacer: https://bobistheoilguy.com/forums/threads/gm-l5p-tmap-temperature-manifold-absolute-pressure-sensor-clogged-with-soot-at-17-500-miles-s-b-map-spacer.355240/...

BITOG GF-7 Questions with Answers Pennzoil & API Q1. Please explain what contributes to LSPI after aging. Pennzoil: As some of us know, low-speed pre-ignition (LSPI) is an abnormal combustion phenomenon typically observed at low engine speeds and high loads in which the fuel/air mixture in...

Today is my 25th service anniversary at work and I got an email with some money I could spend on a gift for myself from a catalog. I was unexcited about the hundreds of items I looked at until I saw this: https://www.makitatools.com/products/details/XRW01SR1 It will be here in a few days.

I documented in this thread that my Chevy 3.0L Duramax uses about 1 quart of oil in 10k miles. https://bobistheoilguy.com/forums/threads/2024-chevy-tahoe-lm2-duramax-10-640-miles-212-hours-on-oil-13-690-total-miles-278-total-hours-hpl-0w-20-dexos-d.387862/ @High Performance Lubricants was...

I repacked the wheel bearings on all four wheels of our 5th wheel trailer this weekend. It's not a difficult job, but somewhat time consuming with the need to completely clean the lithium complex grease out of the bearings and hubs because I switched to an aluminum complex grease. The bearings...

[edit] - Answers posted here: https://bobistheoilguy.com/forums/threads/pennzoil-key-features-and-benefits-of-ilsac-gf-7-q-a-answers.393852/ Hello BITOG Members: Pennzoil here! This time, we are joined by the American Petroleum Institute (API) to welcome members to another virtual community...

This sample from the Durango has been in service for almost 14 months and 16,232 miles. The oil is HPL 5w-20 HDEO. As I stated in the previous UOA post, my son and DIL own the Durango and drive about 80% in town and 20% highway. Many more short trips than how I used the vehicle. There was...

I have a couple Raspberry Pi 5 single board computers with NVMe hats. NVMe is light years faster, higher capacity, and more durable than micro SD. I built both of them last spring and they ran flawlessly until early winter when the NVMe drives started becoming unreachable on the bus. The only...

I started my Tahoe up in the garage at 46F and drove about 15 miles on a county blacktop to the interstate in 20F ambient temperatures. The graph ends about 3 minutes after I got on the interstate. The Tahoe has louvers over the radiator that stay closed until the engine coolant temperature is...

Ever wondered what the temperatures, delta P, and fuel flow look like during a GM 3.0L Duramax regen? The first graph is the Exhaust temperatures at the exhaust manifold and at the sensor just before the DPF. The high EGTs burn off the soot in the DPF. The second graph is the fuel flow and...

This is the first sample of HPL 5w-30 Dexos D in this engine. The back story of why I asked David at HPL to blend a 5w-30 Dexos D is the volatility of the light base stocks in the 0w-20. GM runs this oil very hot, around 240-255°F, and the engine consumed 1 quart in 10k miles. With 0w-20, I...

I pulled across the scale at our local grain elevator. They leave the scale on 24/7 for farmers to weigh at will. This weight is with two people, full fuel, and a few small things in the back.

I have zero clue what this truck is. Seen in my hometown this week. The grill was foreshadowing what was to come. Way before its time :)

GM Super Cruise is a system that uses cameras, LIDAR data, and maps to enable hands free driving in concert with adaptive cruise control. The system will maintain the center of the lane and pace the vehicle in front. If a pass is safe, then Super Cruise will automatically or manually pass the...