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Environment: Coldest temp is -10 to -5 degrees C in winter, hottest is 30 to 35 degrees C Car No. 1 Turbocharged 1.6lt direct injected turbocharged tuned to 237hp from 177hp. BMW F20 LCI 120i N13 Engine Oil change intervals are every 5000km or once a year (which ever comes first) Occasional...

Hi, A co2 leak test was recently done on my car. (2015 F20 LCI 120i n13 engine) There are absolutely no issues with the car, no codes, no misfires, nothing. A compression test was also done and it was perfect. The fluid in the tester turns slightly green, although in the tests manual it...

Would using TCW3 additive damage engines with nikasil bore liners? Does TCW3 oil contain sulphur?

Hi, I couldn't drive my car for 2 months as I was away. E20 gas has been sitting in my cars tank for 8 weeks. Should I be worried? Any chance of it being contaminated?

Hi, I use 75 percent E5 gasoline (95Ron/roz) 15 percent toluene and 10 percent ethanol as fuel in my car. (And also 30ml of TCW3 per 18 liters of total fuel) - This is done for octane enhancement purposes. Today I've noticed that although TCW3 seems to happily dissolve in Toluene, it's not...

Although Toluene and xylene have higher higher mon and ron octane ratings I was told that ethanol burns cooler and thus is a better anti-knock agent. Toluene and xylene both have stoichiometric ratios close to gasoline, and ethanol does not. Which of these chemicals is the best anti-knock...

High I currently have 245/40/R17 rear tyres which weigh 26 (11.7kg) pounds each. I am planning to change the tyres to 225/45/R17s which weigh 20 (9.1kg) pounds each. The rims will be the same and weigh 23 (10.5kg) pounds. I do not have the ability to calculate the acceleration improvement...

Hi, I use Toluene as an octane booster as I need a minimum of 98 ron (93 aki) in my car and only 95 ron (91 aki) is available. I mix %20 percent of toluene. For fuel system and upper engine lubrication I add 30ml (1oz) of Quicksilver TC-W3 oil per 18 liters (5 us gallons) of total fuel. Car...

Hi, I think it's time I ditch the oem rft tyres. I am thinking of going for Goodyear Eagle F1 AS3 tyres. My car current has style 383m rims (fronts 17x7,5 225/45R17 - rears 17x8 245/40/17) I've noticed wear on the outside edge of the front tyres. I believe there are four possible setups I...

I used to be very good at chemistry but it turns out I cannot calculate stoichiometric ratio. What would be the stoichiometric ratio of C8H10 (Xylene) when burned?

Which one is more suitable for my car which is a Mini Cooper S which has direct injection, twin-scroll turbocharger, and variable valve timing. Oil temp is usually between 105-120 degrees C. Which would be low in calcium and still provide adequate protection.

What engine oil is best suited to turbocharged small displacement DI engines EXCEPT Pennzoil products? Would Motul 300V (ester oil) be a good choice if the oil is changed every 5000kms? What about GTL oils? Are there specific engine oil standards targeting LSPI? Thanks

Hi, What can you tell me about the fuel specifications in the link? What additives will best suit this fuel? Thanks https://www.tupras.com.tr/uploads/Urunler2/KURSUNSUZ_BENZIN_95_OKTAN_243.pdf

Hi, I currently own a Mini Cooper S (2011) and I am experiencing knock (confirmed by logging). Both fuel quality and octane are horrible here. There is only one type of gasoline available from the pump. Which is supposedly 84 Mon/ 95 Ron (89,5 AKI?) I had been using Toluene with good results...