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Hi Garak, all good here - thanks for the interest Doug

Hi Helen, take good care of yourself - remember that YOU are a part of our lives too ! Best wishes Doug

Hi, Delvac 1 is the synthetic version of their engine lubricant range I have beem a long term user of Delvac 1 5W-40 and Delvac 1 LE 5W-30

Hi, mmosberg - I would seek out a suitable Delvac 1 product. The Delvac range in Europe is quite good I believe

Hi, mbacfp - You are using a very good product - stick with it

Hi, 79sunrunner - the "A" series Austin-Morris (BMC) engine ran very well on SAE20W-20 (Castrolite), SAE30 (Castrol XL) and 10W-30 lubricants when new - depending on Climate! The 20W-50 lubricant was developed in '58/59 by Duckhams (Q2050) especially for the shared lubrication requirement in...

Hi, Originally Posted By: dustyroads FWIW...it's the Delvac 1 LE 5W30 that lists the Ford spec in the "meets or exceeds" list. I was sure that I saw it listed, I just had the wrong D1 formula. The container of French produced Delvac 1 LE 5W-30 in my stock states it "Meets Requirements"; of...

Hi, landtoy80 - Liqui-Moly products are of a very high quality. Don't be confused by the name! Modern Branded lubricants with the appropriate ratings and quality endorsements do not need any supplementary additives

Hi, Camprunner - Special fuels and lubricants have been used in this arena since at least the early 1930s. Auto-Union and Mercedes-Benz had many years of "hybrid" experience before WW2. They were a beneficiary of the leading research into synth fuels and lubricants during the 1930s - many...

Hi, pscholte - Welcome home................

Hi, CT8 - no wall looking...! The figures I quoted above are averages. We never exceeded the figures above for the mineral & semi-synth lubricants After installing centrifuge we achieved OCIs up around 130kkms with the synthetic lubricant. For operational programming I kept the OCIs at 90kkms...

Hi, Originally Posted By: Garak I'd put it this way. Roadrunner1 certainly isn't wrong. But, the argument can be made that the synthetic would hold up for longer. Doug Hillary didn't switch to synthetics because he likes the cost of synthetic oils down under. Now, if it were the original 3,000...

Hi, NattyBoh - Instead of looking for a synthetic 15W-40 for use in summer it makes sense to run a synthetic HDEO 5W-40 all year round

Hi, Camprunner - 20 & 30 monogrades were popular in the 1950s > 10W-30 came on the scene in the late 1950s and became very popular with US engine makers. I've mentioned many times before - 20W-50 was a special lubricant formulated for the BMC Mini of 1959. First it was Duckhams' Q20W-50...

Hi, Originally Posted By: Rand if soot levels get too high and/or the detergent package is depleted... soot can clump and become abrasive. What were the actual results... excessive is kinda generic and open to interpretation. I agree of course and OEM;s condemnation numbers vary according to...

Hi Zeng, +1 Wasn't pre-1980's Pre-Combustion Direct Injected diesel engines having soot issues big time with CF-4 introduced in around 1990?? ..... and SAE worked out another classification of CF in 1994 to make good the fiasco..? It really started with US sourced engines in the early 1970s...

Hi Silk, Originally Posted By: Silk Originally Posted By: Hohn Or stuck to the inside of the engine as a soot-based sludge. I've never seen a sludged up diesel engine - intake manifolds are a different story. Various diesel engines have been and are prone to soot based sludging. Mostly it...

Hi, Pontual - Yes, lack of idle (or light use) time before shutdown was a major killer of turbos in Heavy Trucks. - especially after a long climb when all temperatures were at or near maximum This was further exacerbated by its location - on some engines they were mounted above the valve cover...

Hello, In HHS Diesel engines these EGT are common parameters; Shut down = 1070f Warning = 820f Normal = 670f Lubricant passes through the turbocharger and a common problem (once was) is oil degradation when substandard lubricants are used

Hi, over the years I've been on BITOG, Castrol's German origin lubricants with ester content have been oft discussed So again; Many Oil Companies were involved in Germany's synthetic lubricants and fuels development programme during the 1030s. It was extensive, comprehensive and it's remnants...