Z71
Gold Member
Still is.
Lubrizol is owned by Berkshire Hathaway Inc, Warren Buffett
Lubrizol is owned by Berkshire Hathaway Inc, Warren Buffett
Then Pennzoil comes along with their "Platinum / Ultra" (Shell) engine oils that claim 'made from natural gas'. But if they were, they would be Group IV, not III. Claim is less deposits than de-graded Mobil 1, so I'm trying that for 1st time in my gasoline engines.
TRC doesn't seem widely distributed up here. I've heard of their products, and nothing bad that I recall, but I have no direct experience.
Petro Canada's Duron line seems to have a good rep, and is noted for their wide viscosity range, 5w or 0w40 products.
Diesel Engine Oils, DURON-E | Petro-Canada
Rgds, D.
Thought the main additive supplier in U.S. was Lubrizol? Or did they get bought out by a mega-corp like everybody else?
My WRX has 81,000 miles. They have a reputation for burning Mobil One, I should try Rotella T6 Synthetic one of these days. Subaru used to recommend 3,750 mi oil changes for turbos but increased it to 7,500 a few years ago. I go 5K and will use half a quart to a quart.Ex. - Subaru boxer 4s tend to beat the heck out of oil, showing up in the Shearing results. Is it a good idea to stretch OCI on one of these Sub engines.... probably not, even with most "Synthetics."
Rgds, D.
My WRX has 81,000 miles. They have a reputation for burning Mobil One, I should try Rotella T6 Synthetic one of these days. Subaru used to recommend 3,750 mi oil changes for turbos but increased it to 7,500 a few years ago. I go 5K and will use half a quart to a quart.
By contrast our Subaru flat six (3.0l) has an oil capacity of 7.5 quarts and uses no oil at all between changes with 171,000 miles on the odo.