Perfectos
Super Poster
Lifetime VIP Member
Hi Guys ,
posting this to highlight a potential issue that may go undetected during normal use and service And help other Avoid potential costly bill.
Van mileage approx 21k miles, three and a half years old,
Extended warranty 5years /80k miles (thank Goodness)
my Van went in for an unrelated issue. (I’ll post this in another thread when diagnosed and fix)
as part of the investigation into the unrelated issue, the VW tech carried out a “Health Check” on my vehicle to investigate an issue reported several times previously and is unrelated to the engine.
(I assume this ”health check” is a general check similar to the “All in warranty“ check Required to qualify for the “all in deal”
The “health check“ involved the removal of the plastic under trays covering the engine and visual inspection of everything to try and establish the reported issue (unrelated) and any other issues they may note during the inspection.
Result of the health check:
Visual Oil residue between engine and gear box:
minimal leak, ( residue noted )
Noting : during previous 21k miles NO loss of oil noted, other than would be considered very minimal & normal, (I.e: less than a couple of litres over 21k miles, top up periodically to ensure oil level was constantly at the top end of normal).
This issue was NOT noted during previous servicing, health checks & oil change by the same VW dealer, whom has carried out the all works to this van , MOT & all previous servicing. (Last service circa 18k miles), so I assume this issue has recently presented.
The oil residue Issue needed to be assessed to determine the correct Remedial action: Either:
a) Crank case seal between engine and gear box (remedial fix = gear box out engine replace seal)
b) Oil bypassing fixing bolts between gearbox and engine (Remedial fix = replace bolts)
c) Gear box oil filler plug leaking (Remedial fix = resin fix drain plug)
all the above are know issues by VW. There are many threads on the T6 forum Relating to each issue.
Diagnoses of the issue noted by VW during the health check :
option a) !
remedial action :
remove gearbox, drain engine oil, fit new oil crank case oil seal to gearbox end, refill engine oil, check leak has been fixed.
(Note: there is another crank case seal at the opposite end of the engine where the timing pulley is located, which has the potential to leak similarly)
curiously VW do not routinely replace the engine oil filter when changing the engine oil as part of this remedial work !
I have requested a new engine oil filter to be fitted Circa £10,
for which I will pay for and have an invoice issued showing the same, therefore dating the works & Milage etc.
I stated that it is good practice to replace the oil filter when replacing the engine oil (although VW don’t seem to agree / include this in the remedial action ! ) so I decided to pay the minimal cost as it is good practice.
May I suggest everyone specifically requests VW to check both crank case oil seals, gear box filler and engine bolts (for potential leaks) at next service or before the factory warranty runs out, including residue of oil to surfaces.
I personally would specifically request all three checks of the potential issue listed above and have it noted on the Dealer service record, as customer requested, so there is a formal record of your request in case of later issue.
incidentally The cost to have crank case one oil seal changed by VW would be IRO £900 +
it’s a surprisingly common issue and had Not been noted or picked up previously during the recommended VW service regime, it only became apparent during an additional check of an unrelated issue.
I hope this proves useful to others and may help save a costly bill outside warranty for someone.
I will further request checks at each subsequent service and before end of warranty (to be recorded)
posting this to highlight a potential issue that may go undetected during normal use and service And help other Avoid potential costly bill.
Van mileage approx 21k miles, three and a half years old,
Extended warranty 5years /80k miles (thank Goodness)
my Van went in for an unrelated issue. (I’ll post this in another thread when diagnosed and fix)
as part of the investigation into the unrelated issue, the VW tech carried out a “Health Check” on my vehicle to investigate an issue reported several times previously and is unrelated to the engine.
(I assume this ”health check” is a general check similar to the “All in warranty“ check Required to qualify for the “all in deal”
The “health check“ involved the removal of the plastic under trays covering the engine and visual inspection of everything to try and establish the reported issue (unrelated) and any other issues they may note during the inspection.
Result of the health check:
Visual Oil residue between engine and gear box:
minimal leak, ( residue noted )
Noting : during previous 21k miles NO loss of oil noted, other than would be considered very minimal & normal, (I.e: less than a couple of litres over 21k miles, top up periodically to ensure oil level was constantly at the top end of normal).
This issue was NOT noted during previous servicing, health checks & oil change by the same VW dealer, whom has carried out the all works to this van , MOT & all previous servicing. (Last service circa 18k miles), so I assume this issue has recently presented.
The oil residue Issue needed to be assessed to determine the correct Remedial action: Either:
a) Crank case seal between engine and gear box (remedial fix = gear box out engine replace seal)
b) Oil bypassing fixing bolts between gearbox and engine (Remedial fix = replace bolts)
c) Gear box oil filler plug leaking (Remedial fix = resin fix drain plug)
all the above are know issues by VW. There are many threads on the T6 forum Relating to each issue.
Diagnoses of the issue noted by VW during the health check :
option a) !
remedial action :
remove gearbox, drain engine oil, fit new oil crank case oil seal to gearbox end, refill engine oil, check leak has been fixed.
(Note: there is another crank case seal at the opposite end of the engine where the timing pulley is located, which has the potential to leak similarly)
curiously VW do not routinely replace the engine oil filter when changing the engine oil as part of this remedial work !
I have requested a new engine oil filter to be fitted Circa £10,
for which I will pay for and have an invoice issued showing the same, therefore dating the works & Milage etc.
I stated that it is good practice to replace the oil filter when replacing the engine oil (although VW don’t seem to agree / include this in the remedial action ! ) so I decided to pay the minimal cost as it is good practice.
May I suggest everyone specifically requests VW to check both crank case oil seals, gear box filler and engine bolts (for potential leaks) at next service or before the factory warranty runs out, including residue of oil to surfaces.
I personally would specifically request all three checks of the potential issue listed above and have it noted on the Dealer service record, as customer requested, so there is a formal record of your request in case of later issue.
incidentally The cost to have crank case one oil seal changed by VW would be IRO £900 +
it’s a surprisingly common issue and had Not been noted or picked up previously during the recommended VW service regime, it only became apparent during an additional check of an unrelated issue.
I hope this proves useful to others and may help save a costly bill outside warranty for someone.
I will further request checks at each subsequent service and before end of warranty (to be recorded)
Last edited:
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