Originally Posted by
Gazwould
None of this relates to mineral spec JASO FB , JASO FC is a semi or full synthetic , JASO FD always a synthetic , so we can't ascertain any zinc levels , if anything they will be lower because FC and FD are higher spec 2 Stroke oils .
Being semi or synthetic they will resist burning more thus leaving deposits .
As for a cetane improvement how else would you account for a quieter engine due to less diesel knock , I saw a few years ago a cetane booster test , some worked , some didn't , 2 Stroke did !
It's extremely rare for 1.9 PD 130 injectors to fail , more common is the injector harness or worn camshaft from poor servicing .
I know plenty of 130 PD's on JASO FB 2 Stroke without issue for years , in Sweden they've been doing it for 30+years .
Mines been on it for 4 years and on 180k now , and notice the benefits including a halfing of MOT Boston machine smoke opacity tests due to better timed combustion because of the cetane improvement .
The correct mineral 2 Stroke benefits are used and felt all over the world , it's being used in small amounts as 200:1 dilution rate so a few hundred ml's to a tank and not a full tank of sunflower oil where I haven't come across another user in another VAG forum user over four forums in 5 years !
Anyway I'll leave you with some actual forum posts from elsewhere as it's everywhere , real people , real observations .
"Well I tried some in half a tank of fuel, just erring on the side of caution. The engine is one hell of a lot quieter and seems smoother too. The fuel trip actually gave me an extra 3mpg over a 100 miles trip.
I don't think it's the placebo effect as I'm a born cynic."
" I used to use a 200ml shot of Mineral 2 Stroke Oil every fill up in my old, non-DPF Ford Focus. It literally transformed the way the car ran when using cheap ASDA diesel.
When I got the Merc I did quite a lot of research on the topic, most notably regarding ASH levels, however, while all oils list their JASO standard it was near impossible to get the exact ash content levels - just that it was within the allowed level by the given standard, which was still way too high if near the upper limit.
I did find oils that were perfectly fine, as I managed to source information on the exact ash levels. However, these oils were not readily available for purchase.
In the end, after more research, I started using Millers Eco-Max - just a small ~75ml shot per tank - which seems to work ok. I'm not seeing the huge differences I noticed with my Focus using cheap diesel + 2 Stroke Oil, but then I do always try to use good fuel such as Shell V-Power or BP Ultimate. However, the two times I was obliged to use ASDA Diesel, I used a 100ml shot of Millers and the car drove nicely. Note: in my Focus, ASDA Diesel and NO 2 Stroke = a noisier, smokier and less responsive car. I was truly shocked how different the car was on ASDA diesel with and without 2 Stroke.
My friend, who does a lot more mileage than me, tried some Millers and was a total convert, he notices a marked decrease in MPG when he doesn't use it.
Personally, I think the higher-end fuels have sufficient additives already - I noticed that my Focus on V-Power performed similarly to the ASDA + 2 Stroke combo in regards mpg, smoke and noise.
However, Millers does still increase the Cetane rating of the fuel slightly which does seem to give a slightly improved mpg in like for like driving. Plus I get that warm and fuzzy feeling knowing injectors and seals are being treated nicely.
If I ever got another non-DPF equipped Diesel, I'd switch back to Mineral 2 Stroke oil in a heart beat.
Edit: Just to add, when I did my initial 2 Stroke Oil research years ago, there was quite a debate of Mineral vs. Semi-/Full-Synthetic. The thinking was that as we're burning the oil rather than using it directly as a lubricant, Mineral Oil was the better choice. Semi and Fully-Synthetic Oils were designed to resist burning and, when burnt with the fuel, could leave deposits. One of the issues was, that it could take tens of thousands of miles before any such deposits posed a problem. So, there were lots of replies such as "I've used it for 100's of miles, it's fine", when only a full strip-down could actually tell you if that's true. Personally, I chose to err on the side of caution and use Mineral Oils only.
Interesting point re: 2 Stroke Oil in my Focus. Like I said, I'd put a 200ml shot in per fill-up, this became habit for me. When I sold the car to a friend, I informed of this, but he didn't quite get it. After about a month of owning the car, he contacted me to say it'd suddenly got noisier and he was seeing smoke under acceleration. After some initial worry this was a sign of an impending BIG issue, it turned out he'd not been adding in 2 Stroke when filling up (I'd left him some). The car wasn't empty, but he went to top-up and added 2 Stroke, and the car was back to it's old self again."